knock out
verb
Forms knocks out knocking out knocked out
- verb (transitive) To strike or bump (someone or something) out. “I accidentally knocked out the glass in my picture frame.”
- verb (transitive, idiomatic) To render unconscious, as by a blow to the head. “The boxer knocked out his opponent in the third round.”
- verb (transitive, informal, idiomatic) To put to sleep. “The allergy pill knocked him out for a good three hours.”
- verb (intransitive, informal, idiomatic) To fall asleep, especially suddenly.
- verb (transitive, informal, idiomatic) To exhaust. “Running errands all day really knocked him out.”
- verb (transitive, informal, idiomatic) To impress, surpass or overwhelm (someone).
- verb (transitive, slang) To defeat or kill (someone).
- verb (transitive, idiomatic) To cause a mechanism to become non-functional by damaging or destroying it. “The antitank gun knocked out the enemy tank.”
Synonyms
Sources: Wiktionary · WordNet 3.0 — from the Wiktionary entry “knock out”, CC BY-SA 4.0. Details