noun A device, usually hinged with a striking plate, used for knocking on a door.
noun A person who knocks.
noun A critic; one who disparages.
noun A person who knocks (denigrates) something.
noun A person's breast, especially if large.
noun A dwarf, goblin, or sprite imagined to dwell in mines and to indicate the presence of ore by knocking. .mw-parser-output .defdate{font-size:smaller}
noun A mechanical device in a pinball table that produces a loud percussive noise to signal that a free game has been earned.
noun A person who is strikingly handsome or otherwise admirable; a stunner.