knock out - overwhelm with admiration
Example:- All the guys were knocked out by her charm
kayo, knock cold, knock out - knock unconscious or senseless
Example:- the boxing champion knocked out his opponent in a few seconds
knock out - empty (as of tobacco) by knocking out
Example:- knocked out a pipe
knock out - eliminate
Example:- knock out a target
knock out - destroy or break forcefully
Example:- The windows were knocked out