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knock
knock about
knock around
knock back
knock-back
knock down
knock-for-knock
knock-knee
knock off
knock on
knock-on
knock out
knock over
knock together
knock up
knock-up
knockabout
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knockout drops
knock·out drops


plural noun 
Definition:
 
tranquilizer secretly added to drink: a solution, usually containing chloral hydrate, secretly put in a drink to render the drinker unconscious ( informal )

Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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