knock out

En español: noquear

1. To strike or bump (someone or something) out. (transitive) · I accidentally knocked out the glass in my picture frame.
2. To render unconscious, as by a blow to the head. (transitive) · The boxer knocked out his opponent in the third round.
3. To put to sleep. (informal, transitive) · The allergy pill knocked him out for a good three hours.
4. To fall asleep, especially suddenly. (informal, intransitive)
5. To exhaust. (informal, transitive) · Running errands all day really knocked him out.
6. To impress, surpass or overwhelm (someone). (informal, transitive)
7. To defeat or kill (someone). (slang, transitive)
8. To cause a mechanism to become non-functional by damaging or destroying it. (transitive) · The antitank gun knocked out the enemy tank.