knocker

[ nok-er ]
/ ˈnɒk ər /

noun

a person or thing that knocks.
a hinged knob, bar, etc., on a door, for use in knocking.
Informal. a persistent and carping critic; faultfinder.
Slang: Vulgar. a female breast.

Idioms for knocker

    on the knocker, British Slang. canvassing or selling door-to-door.

Origin of knocker

Middle English word dating back to 1350–1400; see origin at knock, -er1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for knocker

British Dictionary definitions for knocker

knocker
/ (ˈnɒkə) /

noun

an object, usually ornamental and made of metal, attached to a door by a hinge and used for knocking
informal a person who finds fault or disparages
(usually plural) slang a female breast
a person or thing that knocks
on the knocker Australian and NZ informal promptly; at onceyou pay on the knocker here
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012