单词	reef
释义	reef1 nounreef2 verb reefreef1 /riːf/ noun [countable] Word Origin WORD ORIGINreef1 Origin: 1500-1600 Dutch rif Examples EXAMPLES FROM OTHER DICTIONARIES the Great Barrier Reef EXAMPLES FROM THE CORPUS For a moment Trent thought of letting the whole damn lot of them go up on the reef. Have you ever seen an ocean wave pass over a submerged reef? It was near the ocean and Heather could hear the waves crashing on the reef from where she lay in the bed. Large shoals may be found on quite shallow reefs or close to the walls of steep drop-offs beyond the protecting reef. Like most of the true crabs they can be very destructive in the reef tank. They look as although they belong in a warm and sunny tropical coral reef rather than the dark and cold abyss. Where does the synthetic coral reef end and the chanting wave machine begin? word sets WORD SETS► Geography abyss, nounalluvial, adjectivealluvium, nounalpine, adjectiveAmerican, adjectiveAntarctica, anticyclone, nounarchipelago, nounArctic, adjectivearid, adjectiveAsia, atlas, nounatoll, nounAustralasia, Australasian, adjectiveAustralia, avalanche, nounaxis, nounbank, nounbarometer, nounbarrier reef, nounbasin, nounbay, nounbayou, nounbeach, nounbearing, nounbed, nounbight, nounbluff, nounborder, nounborder, verbborderland, nounborderline, nounborough, nounbox canyon, nounBritish, adjectivebutte, nouncanyon, nouncape, nouncapital, nouncardinal point, nounCaribbean, adjectivecartography, nouncay, nounchain, nounchaparral, nounchart, nounchasm, nounchimney, nounChinese, adjectivecirrus, nounCIS, nouncliff, nounclimate, nounclimatic, adjectivecoastal, adjectivecoastline, nouncockney, nouncol, nouncold front, nouncommuter belt, nouncompass, nounconfluence, nouncontinent, nouncontinental, adjectivecontinental shelf, nouncontour, nounconurbation, nouncoordinate, nouncorridor, nouncorrie, nouncoterminous, adjectivecouncil estate, nouncountry, nouncounty, nouncounty town, nouncourse, nouncove, nouncrag, nouncraggy, adjectivecreek, nouncrevasse, nouncrevice, nouncumulus, nouncyclone, noundateline, noundelta, noundesert, noundesert island, noundevelopment, noundistrict, noundivide, noundown, adverbdune, noundust bowl, nouneast, nouneast, adjectiveeast, adverbeastbound, adjectiveeasterly, adjectiveeasterly, nouneastern, adjectiveEasterner, nouneasternmost, adjectiveeastwards, adverbelevation, nouneminence, nounenvirons, nounequatorial, adjectiveerode, verberosion, nounescarpment, nounestuary, nounEurope, nounextraterritorial, adjectiveeyot, nounface, nounfarmland, nounfeeder, nounfiord, nounfirth, nounfjord, nounflood plain, nounfluvial, adjectivefrontier, nounfrontiersman, noungale force, adjectivegap, noungeo-, prefixgeography, noungeophysics, noungeopolitics, noungeyser, nounglacial, adjectiveglaciation, nounglacier, nounglobe, noungoldfield, noungorge, noungrassland, nounGrecian, adjectivegreen belt, noungrid, noungrotto, noungroundwater, noungulch, noungulf, noungully, nounhead, nounheadland, nounheadwaters, nounheartland, nounhemisphere, nounhighland, adjectivehighlands, nounhigh water mark, nounhinterland, nounHome Counties, the, homeland, nounhurricane, noun-i, suffixIberian, adjectiveiceberg, nounice cap, nounice floe, nounice pack, nounice sheet, nouninhabitant, nouninland, adjectiveinland, adverbinlet, nouninner city, nouninshore, adverbinsular, adjectiveintercontinental, adjectiveInternational Date Line, nounisland, nounisle, nounislet, nounisobar, nounIsraeli, adjectiveIsraeli, nounisthmus, nounItalian, adjectiveItalianate, adjectiveItalo-, prefixJapanese, adjectivekey, nounknoll, nounlagoon, nounlake, nounlandlocked, adjectivelandmass, nounlandslide, nounlandslip, nounlat., Latin, adjectiveLatin America, nounLatin American, adjectivelatitude, nounlevee, nounlittoral, nounlong., longitude, nounlongitudinal, adjectivelough, nounlowlands, nounlow-lying, adjectivelow water mark, nounmagnetic north, nounmagnetic pole, nounmarsh, nounmarshland, nounmeander, verbMediterranean, adjectiveMercator projection, nounmeridian, nounmesa, nounMiddle America, nounmidtown, adjectivemonsoon, nounmoorland, nounmorass, nounmountain, nounmountainside, nounmountaintop, nounmouth, nounmudslide, nounmull, nounnarrows, nounnavigation, nounNE, neck, nounnor'-, prefixnorth, nounnorth, adjectivenorth, adverbNorth America, nounnortheast, nounnortheast, adjectivenortheasterly, adjectivenortheastern, adjectivenortheastwards, adverbnortherly, adjectivenorthern, adjectivenortherner, nounnorthernmost, adjectivenorthwards, adverbnorthwest, nounnorthwest, adjectivenorthwesterly, adjectivenorthwestern, adjectivenorthwestwards, adverbnotch, nounNW, NZ, oasis, nounoccidental, nounocean, nounonshore, adjectiveopenness, nounOrdnance Survey map, nounoriental, adjectiveoutcrop, nounoverspill, nounpack ice, nounpaddy, nounpalisade, nounpan-, prefixpanhandle, nounparallel, nounpeak, nounpeninsula, nounPersian, adjectivephysical geography, nounplain, nounplateau, nounpoint, nounpolar, adjectivepole, nounpolitical geography, nounpollutant, nounpop., populate, verbpopulation, nounprairie, nounprecipice, nounprecipitation, nounPrime Meridian, principality, nounprojection, nounpromontory, nounprovince, nounprovincial, adjectivepueblo, nounR, rainfall, nounrain forest, nounrain gauge, nounrainstorm, nounrange, nounravine, nounreef, nounreference, nounregion, nounregional, adjectiverelief map, nounreservoir, nounresettle, verbresidential, adjectiveresource, nounridge, nounrift valley, nounrise, verbriver, nounriver basin, nounriver bed, nounRoman, adjectiverotation, nounrugged, adjectiverun-off, nounrural, adjectivesand, nounsand bar, nounsandstorm, nounsandy, adjectivesavanna, nounScandinavian, nounscar, nounscarp, nounscree, nounscrubland, nounSE, seaboard, nounsea breeze, nounseafront, nounsea level, nounseaport, nounseaward, adjectivesection, nounsemitropical, adjectiveshelf, nounslough, nounsmog, nounsnowfield, nounsource, nounsouth, nounsouth, adjectivesouth, adverbSouth America, adjectivesoutheast, nounsoutheast, adjectivesoutheasterly, adjectivesoutheastern, adjectivesoutheastwards, adverbsoutherly, adjectivesouthern, adjectivesouthernmost, adjectivesouthwards, adverbsouthwest, nounsouthwest, adjectivesouthwesterly, adjectivesouthwestern, adjectivesouthwestwards, adverbspeleology, nounspit, nounspur, nounstrait, nounsubcontinent, nounsubtropical, adjectivesuburb, nounsuburban, adjectivesummit, nounsurvey, nounsurvey, verbSW, swamp, nountableland, nounterrain, nounterritory, nountidal, adjectivetidal wave, nountidewater, nountime zone, nountop, nountopography, nountor, nountornado, nountown, nountown centre, nountowpath, nountrack, nountract, nountrade route, nountrail, nountransatlantic, adjectivetranscontinental, adjectivetributary, nountropic, nountropical, adjectivetundra, nountyphoon, nounUK, the, uncharted, adjectiveup, adverbup-country, adjectiveuplands, nounupper, adjectiveupriver, adverbupstate, adjectiveupstream, adverbuptown, adverburban, adjectiveurbanized, adjectiveurban renewal, nounurban sprawl, nounUS, the, adjectivevalley, nounW, warm front, nounwaste, adjectivewasteland, nounwater, verbwatercourse, nounwaterfall, nounwaterfront, nounwaterhole, nounwatering place, nounwater meadow, nounwatershed, nounwater table, nounwaterway, nounweather vane, nounwest, nounwest, adjectiveWest, nounwestern, adjectiveWesterner, nounwesternmost, adjectivewestward, adverbwilderness, nounwolds, nounzoning, noun Collocations COLLOCATIONS FROM THE ENTRY► coral reef  a proposal to protect several miles of thousand-year-old coral reef COLLOCATIONS FROM THE CORPUSADJECTIVE► coral · Many of them were the tops of volcanoes poking out of the ocean, and most were surrounded by deadly coral reefs.· This is true whether you are in a desert or a forest or swimming on a coral reef.· To seaward, bright tropical fish dance in the coral reefs.· The coral sand surrounding coral reefs is believed to be mostly produced by Parrotfish and Triggerfish.· Five years after Gomez launched the coral reef, it is only now configuring itself into self-sustenance.· The beautiful coral reefs are being destroyed by local people selling mementoes to tourists.· Where does the synthetic coral reef end and the chanting wave machine begin? NOUN► barrier · In detail barrier reefs consist of whole series of individual reefs and may have small islands on them.· Thus, the fringing reef would be changed into a barrier reef and finally into an atoll if the island subsided completely.· In fact islands with multiple barrier reefs are unknown, although a very few double reefs are known. a line of sharp rocks, often made of coral, or a raised area of sand near the surface of the sea:  a proposal to protect several miles of thousand-year-old coral reef reef1 nounreef2 verb reefreef2 (also reef in) verb [transitive] technical Word Origin WORD ORIGINreef2 Origin: 1600-1700 reef ‘part of a sail tied up’ (14-21 centuries), from Old Norse rif Verb Table VERB TABLE reef Simple Form Present I, you, we, they reef he, she, it reefs Past I, you, he, she, it, we, they reefed Present perfect I, you, we, they have reefed he, she, it has reefed Past perfect I, you, he, she, it, we, they had reefed Future I, you, he, she, it, we, they will reef Future perfect I, you, he, she, it, we, they will have reefed Continuous Form Present I am reefing he, she, it is reefing you, we, they are reefing Past I, he, she, it was reefing you, we, they were reefing Present perfect I, you, we, they have been reefing he, she, it has been reefing Past perfect I, you, he, she, it, we, they had been reefing Future I, you, he, she, it, we, they will be reefing Future perfect I, you, he, she, it, we, they will have been reefing word sets WORD SETS► Water adrift, adjectiveaft, adjectiveahoy, interjectionaircraft carrier, nounamidships, adverbanchor, nounanchor, verbanchorage, nounark, nounastern, adverbballast, nounbarge, nounbargee, nounbargepole, nounbarnacle, nounbarque, nounbarrage, nounbeach, verbbeam, nounbecalmed, adjectiveberth, nounberth, verbbilge, nounbill of lading, nounbillow, nounblade, nounboat, nounboat hook, nounboathouse, nounboating, nounboatman, nounbob, verbbollard, nounboom, nounbow, nounbridge, nounbrig, nounbulkhead, nounbunk, nounbuoy, nouncabin, nouncabin boy, nouncabin class, nouncabin cruiser, nouncable, nouncanal, nouncanal boat, nouncanoe, nouncanoe, verbcapstan, nouncaptain, nouncatamaran, nouncircumnavigate, verbclipper, nouncoast, verbcoaster, nouncoastguard, nouncockpit, nouncommodore, nouncompanionway, nounconning tower, nouncoracle, nouncordage, nouncox, nouncoxswain, nouncraft, nouncrew, verbcrossing, nouncrow's nest, nouncruise, verbcruise liner, nouncruiser, nouncruise ship, nouncutter, noundeck, noundecompression chamber, nounderrick, noundinghy, noundisembark, verbdisgorge, verbdisplacement, noundock, noundock, verbdocker, noundockside, noundockyard, noundory, noundownstream, adverbdraught, noundraw, verbdrawbridge, noundredge, verbdredger, noundrift, verbdrift, noundrifter, noundriftwood, noundrilling platform, noundrown, verbdry dock, noundugout, noundyke, nounembark, verbensign, nounferry, nounferry, verbferryboat, nounfigurehead, nounfirst mate, nounfirst officer, nounfleet, nounflotilla, nounfo'c'sle, nounforecastle, nounfounder, verbfrigate, nounfrogman, noungalleon, noungalley, noungangplank, noungangway, noungondola, noungondolier, noungrappling iron, nounground, verbgunnel, noungunwale, nounhalyard, nounharbour, nounhatch, nounhawser, nounhelm, nounhelmsman, nounhigh tide, nounhigh water, nounhigh water mark, nounhold, nounhoot, nounhoot, verbhouseboat, nounhovercraft, nounhulk, nounhull, nounhydrofoil, nounhydroplane, nounhydroplane, verbicebreaker, nouninboard, adjectiveinflatable, nouninflow, nounJet Ski, nounjetty, nounjib, nounjunk, nounkayak, nounkeel, nounketch, nounknot, nounkt, land, verblanding stage, nounlane, nounlaunch, verblaunch, nounleeward, adjectivelife belt, nounlifeboat, nounlife buoy, nounlife jacket, nounlifeline, nounlife preserver, nounlife raft, nounlife vest, nounlighter, nounlighthouse, nounlightship, nounliner, nounlist, verblock, nounlock keeper, nounlog book, nounlongshoreman, nounlow tide, nounlow water, nounlow water mark, nounlugger, nounmainmast, nounmainsail, nounmaritime, adjectivemast, nounmaster, nounmasthead, nounmerchantman, nounmerchant navy, nounmerchant seaman, nounminesweeper, nounmizzen, nounmoor, verbmooring, nounmother ship, nounmotorboat, nounnarrow boat, nounnautical, adjectivenavigable, adjectivenavigate, verbnavigation, nounoakum, nounoar, nounoarlock, nounoarsman, nounoarswoman, nounoceangoing, adjectiveoffshore, adjectiveoil slick, nounoil tanker, nounoutboard motor, nounoutrigger, nounoverboard, adverboyster bed, nounpacket boat, nounpaddle, nounpaddle, verbpaddle steamer, nounpassage, nounpelagic, adjectiveperiscope, nounpier, nounpilot, nounpilot, verbpitch, verbPlimsoll line, nounplot, verbply, verbpoop deck, nounport, nounporthole, nounport of call, nounpowerboat, nounprivateer, nounpromenade deck, nounpropeller, nounprow, nounpunt, nounpunt, verbpurser, nounquadrant, nounquarterdeck, nounquay, nounraft, nounrafting, nounreef, verbrefit, verbregatta, nounresurface, verbrig, verbrig, nounrigging, nounroll, verbroll, nounroll-on roll-off, adjectivero-ro, nounrow, verbrowboat, nounrowing, nounrowing boat, nounrowlock, nounrubber dinghy, nounrudder, nounsail, verbsail, nounsailboat, nounsailing, nounsailing boat, nounsailing ship, nounsailor, nounsaloon, nounsampan, nounschooner, nounscull, nounscull, verbscupper, verbscupper, nounscuttle, verbseaborne, adjectivesea captain, nounsea dog, nounseafaring, adjectiveseagoing, adjectivesea lane, nounsea legs, nounsealer, nounseaman, nounseamanship, nounseaworthy, adjectivesheet, nounship, nounshipmate, nounshipping, nounshipping lane, nounship's chandler, nounshipwreck, nounshipwright, nounshipyard, nounside-wheeler, nounskiff, nounskull and crossbones, nounslaver, nounslipway, nounsloop, nounsluice, nounsmack, nounsonar, nounspar, nounspeedboat, nounsplice, verbSS, starboard, nounsteam, verbsteamboat, nounsteamer, nounsteamship, nounsteerage, nounsteersman, nounstern, nounstevedore, nounsteward, nounstewardess, nounstoker, nounsub, nounsubmarine, nounsubmarine, adjectivesubmersible, nounsundeck, nounsupertanker, nounswab, verbswell, nounswing bridge, nountack, nountack, verbtender, nounthird class, nountiller, nountonnage, nountopside, adverbtowpath, nountransport, nountransport ship, nountrawler, nountrim, verbtrimaran, nountroopship, nountub, nountug, nounupstream, adverbvessel, nounvoyage, nounvoyage, verbwake, nounwardroom, nounwarship, nounwaterborne, adjectivewaterlogged, adjectivewaterway, nounweir, nounwhaler, nounwheelhouse, nounwhirlpool, nounwindjammer, nounwindward, adjectivewreck, nounyachting, noun to tie up part of a sail in order to make it smaller
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