Knocker

Noun

 * 1) A device, usually hinged with a striking plate, used for knocking on a door.
 * 2) A person who knocks (denigrates) many things.
 * 3)   A woman's breasts.
 * 4) A dwarf, goblin, or sprite imagined to dwell in mines and to indicate the presence of ore by knocking particularly in Cardigan etc. in South Wales (18th..19th century).

Synonyms

 * (a woman's breasts) - See WikiSaurus:breasts

Derived terms

 * knocker up
 * doorknocker, door knocker

Thesaurus
Thersites, backbiter, bag, belittler, boobs, bosom, breast, breasts, brisket, bust, calumniator, carper, caustic critic, caviler, chest, criticizer, crop, cynic, debunker, decrier, defamer, deflater, depreciator, derogator, detractor, disparager, dug, faultfinder, hatchet man, knockers, libeler, mama, mamelon, mamelonation, mammary gland, mammilla, mammillation, momus, muckraker, mudslinger, nenes, nipple, pap, papilla, pigeon breast, railer, slanderer, smellfungus, social critic, teat, thorax, tit, tits, titties, titty, traducer, udder