knockerknock‧er /ˈnɒkə $ ˈnɑːkər/ noun [countable] 
word sets
a piece of metal on an outside door of a house that you hit against the door to attract the attention of the people inside → doorknocker2knockers [plural] spoken not polite an offensive word meaning a woman’s breasts
word setsWORD SETS► Household
Collocationsairbed, nounair conditioning, nounair freshener, nounappliance, nounbachelor flat, nounback-to-back, nounbackyard, nounballcock, nounbar, nounbarn, nounbarrow, nounbaseboard, nounbasket, nounbay window, nounbeater, nounbedclothes, nounbedding, nounbed linen, nounbedspread, nounbidet, nounblade, nounbleach, nounboard, verbboarding, nounbobbin, nounbog, nounbog roll, nounbolt, nounbolt, verbboom box, nounboudoir, nounbow window, nounbric-a-brac, nounbutler, nouncarpet, nouncarpet, verbcarpeting, nouncasket, nouncement, nouncentral heating, nouncentrepiece, nounchamber, nounchamber pot, nounchange purse, nounchimney breast, nounchimney-piece, nounChristmas stocking, nounChristmas tree, nouncloth, nouncoal, nouncoal scuttle, nouncolour scheme, nouncomforter, nounconvection oven, nounconvector, nouncooker, nouncooler, nouncounterpane, nouncreosote, nouncubbyhole, nouncurtain, nouncurtain hook, nouncushion, noundaily, noundefrost, verbden, noundesk tidy, noundes res, noundetergent, noundimmer, noundomestic, adjectivedomestic, noundomesticated, adjectivedomesticity, noundomestic science, noundomestic service, noundoor, noundormer, noundraughty, adjectivedrive, noundriveway, noundrop cloth, nounduplex, noundust, nounduvet, noundwelling, noundwelling house, nounearthen, adjectiveeggshell, nounempties, nounfire alarm, nounfirelighter, nounflock, nounflooring, nounfluff, nounflush, verbflypaper, nounflyswatter, nounfold, verbfootman, noungarage sale, noungarbage, noungasman, noungas meter, noungate, noungatehouse, noungatepost, noungateway, noungauze, noungingham, nounglass, nounglaze, verbglazing, noungrating, noungroan, verbguardrail, noungutter, nounguttering, nounhall, nounhallway, nounhandkerchief, nounhandyman, nounhang, verbhanging, nounhardware, nounheat, nounheatproof, adjectiveheat-resistant, adjectiveheirloom, nounhelper, nounhot-water bottle, nounhouseboy, nounhousekeeper, nounhousemaid, nounhousewares, nounhumidifier, nounhurricane lamp, nounimmersion, nounimmersion heater, nouninlaid, adjectiveinlay, nouninsulation, nouninterior decorator, nounionizer, nounironwork, nounjumble, nounjumble sale, nounkeepsake, nounkeyhole, nounknocker, nounlag, verblagging, nounlanding, nounlaundry basket, nounlinen, nounloo, nounmaid, nounmaidservant, nounmailbox, nounmajordomo, nounmanor, nounmantelpiece, nounmasking tape, nounmirror, nounmosquito net, nounmote, nounmothball, nounmoulding, nounmouth, nounmove, nounmoving van, nounmullion, nounnewspaper, nounniche, nounnonflammable, adjectivenook, nounobjet d'art, nounodd-job man, nounoilcloth, nounoil-fired, adjectiveornament, nounouthouse, nounoverflow, nounpad, nounpail, nounpaint, nounpaint, verbpaintbrush, nounpainting, nounpalatial, adjectivepaling, nounpalisade, nounpanel, nounpanelled, adjectivepantile, nounpaper, nounpaper, verbpartition, nounparty wall, nounpasskey, nounpaste, nounpatina, nounpebbledash, nounpegboard, nounpencil, nounpencil sharpener, nounpendulum, nounpension, nounpercale, nounpicture rail, nounpiggy-bank, nounpillowcase, nounpin, nounpincushion, nounplace card, nounplace mat, nounplastic wrap, nounplug, nounplughole, nounplumbing, nounplunger, nounpoker, nounpomander, nounpotpourri, nounpress, nounprivy, nounproperty, nounpunkah, nounQ-tip, nounqueen-size, adjectivequilted, adjectiverail, nounrailing, nounrake, verbrambling, adjectiveramp, nounredecorate, verbrelay, verbremote, nounremote control, nounretainer, nounribbon development, nounroller blind, nounrug, nounrumpus room, nounsafety match, nounsanitation worker, nounsconce, nounScotch tape, nounscrapbook, nounscrap paper, nounscreen, nounscreen door, nounscrew, nounscrew top, nounscullery, nounscuttle, nounSellotape, nounsheet, nounshelving, nounshower, nounshutter, nounshuttered, adjectivesink, nounskirting board, nounsliding door, nounsoft furnishings, nounspiral staircase, nounspittoon, nounsponge bag, nounsteam iron, nounstitch, verbstitching, nounstopcock, nounstorage heater, nounstove, nounstripper, nounsump, nounswag, nounswing door, nountablecloth, nountable linen, nountable mat, nountableware, nountaper, nountapestry, nountarpaulin, nountelevision, nountelly, nounterrycloth, nounthinner, nounthrowaway, adjectivethumbtack, nountinsel, nountoilet, nountowel, nountowel rail, nountransistor radio, nountrash can, nountrash compactor, nountread, nountrunk, nountub, nountumble dryer, noununfurnished, adjectivevalance, nounvarnish, nounvase, nounVenetian blind, nounwalk-in, adjectivewall, noun-ware, suffixwastepaper basket, nounwater closet, nounway out, nounWC, nounweathercock, nounweather vane, nounwhite spirit, nounwick, nounwind chimes, nounwindow, nounwindow box, nounwindowpane, nounwindowsill, nounwipe, nounwoodpile, nounwoodshed, nounwrapper, nounwrapping, nounwrapping paper, nounyard, nounyard sale, noun
COLLOCATIONS FROM OTHER ENTRIES► a door knocker
1 (=a metal object on a door that you use to knock with)· There was a brass door knocker in the shape of a lion's head.
a piece of metal on an outside door of a house that you hit against the door to attract the attention of the people inside → doorknocker2knockers [plural] spoken not polite an offensive word meaning a woman’s breasts