What does "knock-and-announce" mean?

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

noun

noun ·Rare ·Advanced level

Definitions

Noun

1
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"

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.