knock-and-announce

knock-and-announce

1. (law) A common law principle that requires law enforcement officers to announce their presence and provide residents with an opportunity to open the door prior to a search.

   knock-and-announce rule

   knock-and-announce warrant

• a man's home is his castle
• castle doctrine
• no-knock warrant

• “knock-and-announce”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.