knock out
Pronunciation:
verb
Definitions
To strike or bump (someone or something) out.
Example: I accidentally knocked out the glass in my picture frame.
To render unconscious, as by a blow to the head.
Example: The boxer knocked out his opponent in the third round.
To put to sleep.
Example: The allergy pill knocked him out for a good three hours.
To exhaust.
Example: Running errands all day really knocked him out.