life buoyˈlife ˌbuoy noun [countable] 
word sets
a large ring made out of material that floats, which you throw to someone who has fallen in the water, to prevent them from drowning
word setsWORD 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
a large ring made out of material that floats, which you throw to someone who has fallen in the water, to prevent them from drowning