Rendering someone unconscious. / Amazing; gorgeous; beautiful. / (genetics) Designating an organism in which a particular gene has been removed or deactivated. / Causing elimination from a competition.

The act of making one unconscious, or at least unable to come back on one's feet within a certain period of time; a TKO. / The deactivation of anything.

plural of knockout

(martial arts) A knockout declared by a referee in cases where a participant is sufficiently injured, unbalanced, or confused and unable to continue the fight

An auction where most of the bidders are secretly shills.

plural of knockout auction

(biology, genetics) Any of several forms of mice that have been genetically engineered by inactivating specific genes

(slang, US, usually in the plural) A drop of a drug used to make a person fall asleep or become unconscious or stupefied for the purpose of robbery, etc., typically by mixing it into a drink.

plural of knockout drop

plural of technical knockout