| Noun | 1. | knockout - a very attractive or seductive looking womanadult female, woman - an adult female person (as opposed to a man); "the woman kept house while the man hunted" |
| 2. | knockout - a blow that renders the opponent unconscioustechnical knockout, TKO - a knockout declared by the referee who judges one boxer unable to continue blow - a powerful stroke with the fist or a weapon; "a blow on the head" | |
| Adj. | 1. | knockout - very strong or vigorous; "strong winds"; "a hard left to the chin"; "a knockout punch"; "a severe blow" strong - having strength or power greater than average or expected; "a strong radio signal"; "strong medicine"; "a strong man" |