Definition of "knock out" in 英语

Verb

1. To strike or render unconscious To strike or bump (someone or something) out.

   • I accidentally knocked out the glass in my picture frame.
   • The boxer knocked out his opponent in the third round.
   • The allergy pill knocked him out for a good three hours.
   • Running errands all day really knocked him out.
   • The antitank gun knocked out the enemy tank.

2. To strike or bump (someone or something) out.

   • I accidentally knocked out the glass in my picture frame.

3. To render unconscious, as by a blow to the head.

   • The boxer knocked out his opponent in the third round.

4. To put to sleep.

   • The allergy pill knocked him out for a good three hours.

5. To fall asleep, especially suddenly.

6. To exhaust.

   • Running errands all day really knocked him out.

7. To impress, surpass or overwhelm (someone).

8. To defeat or kill (someone).

9. To cause a mechanism to become non-functional by damaging or destroying it.

   • The antitank gun knocked out the enemy tank.

10. To eliminate from a contest or similar.

11. To communicate (a message) by knocking.

    • The prisoner knocked out a message on the wall for the prisoner in the adjoining cell.

12. To complete, especially in haste; knock off.

    • They knocked out the entire project in one night.

13. To lose the scent of hounds in fox-hunting.

14. To leave college after hours—after half-past ten at night when the doors have been locked.

15. To obtain or earn (something, often money or food).

16. To sell.