01 n. One who, or that which, knocks; specifically, an instrument, or kind of hammer, fastened to a door, to be used in seeking for admittance.
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1.
One who, or that which, knocks; specifically, an instrument, or kind of hammer, fastened to a door, to be used in seeking for admittance.“Shut, shut the door, good John ! fatigued, I said; Tie up the knocker; say I'm sick, I'm dead.” — Pope.
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2.
A person strikingly handsome, beautiful, or fine; one who wins admiration; a “stunner.”[Slang.]
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3.
A species of large cockroach, especially Blabera gigantea, of semitropical America, which is able to produce a loud knocking sound.
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4.
a woman's breast.[usually used in pl.]