roof knocking

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Noun

1. {{lb|en|military}} The practice of [[drop]]ping a [[nonexplosive]] or [[low]]-[[yield]] device on a [[target]] around 10 to 15 [[minute]]s before a [[bombing]] in order to [[caution]] any [[civilian]]s present to [[flee]], so as to [[minimize]] civilian [[casualty|casualties]].

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.