knock out

美 [nɑːk aʊt] 英 [nɒk aʊt]

knock out

Verb

eliminate;

"knock out a target"

knock unconscious or senseless;

"the boxing champion knocked out his opponent in a few seconds"

destroy or break forcefully;

"The windows were knocked out"

overwhelm with admiration;

"All the guys were knocked out by her charm"

empty (as of tobacco) by knocking out;

"knocked out a pipe"

knock out近义词

drug exhaust tire snow kayo knock cold