no-knock: Meaning and Definition of

no-knock

Pronunciation: (nō'nok"), [key]
— adj.
  1. antiknock.
  2. that authorizes law-enforcement officers to enter premises unannounced and without identifying themselves: a no-knock narcotics policy.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.