knock out

1. To strike or render unconscious
2. To strike or render unconscious
3. (informal) To strike or render unconscious
4. (informal) To strike or render unconscious
5. (informal) To strike or render unconscious
6. (informal) To strike or render unconscious
7. (slang) To strike or render unconscious
8. To strike or render unconscious
9. To strike or render unconscious
10. To communicate (a message) by knocking.
11. (informal) To complete, especially in haste; knock off.
12. To lose the scent of hounds in fox-hunting.
13. (obsolete) To leave college after hours—after half-past ten at night when the doors have been locked.
14. To obtain or earn (something, often money or food).
15. (slang) To sell.