knocker

noun
ElementaryNot in standard dictionaries
1

A device, usually hinged with a striking plate, used for knocking on a door.

2

A person who knocks.

3

A critic; one who disparages.

4

A person who knocks (denigrates) something.

5

A person's breast, especially if large.

6

A dwarf, goblin, or sprite imagined to dwell in mines and to indicate the presence of ore by knocking.

7

A mechanical device in a pinball table that produces a loud percussive noise.

8

A person who is strikingly handsome or otherwise admirable; a stunner.

9

A large cockroach, especially Blaberus giganteus, of semitropical America, which is able to produce a loud knocking sound.

10

A large, boulder-shaped outcrop of bedrock in an otherwise low-lying landscape, chiefly associated with a mélange.

#archaic#dated#derogatory#informal#slang