knockout

noun

knock·out | \ ˈnäk-ˌau̇t

Definition of knockout

(Entry 1 of 3)

1a : the act of knocking out : the condition of being knocked out

b(1) : the termination of a boxing match when one boxer has been knocked down and is unable to rise and resume boxing within a specified time

(2) : technical knockout

c : a blow that knocks out an opponent

2 : a sensationally striking, appealing, or attractive person or thing

knockout

adjective

Definition of knockout (Entry 2 of 3)

1 : causing a knockout a knockout blow

2 : sensationally striking, appealing, or attractive a knockout dress

3 : having all or part of a gene eliminated or inactivated by genetic engineering knockout mice predisposed to diabetes mellitus

knock out

verb

knocked out; knocking out; knocks out

Definition of knock out (Entry 3 of 3)

1 : to produce roughly or hastily

2a(1) : to defeat (a boxing opponent) by a knockout

(2) : to make unconscious the drug knocked him out

b : to make inoperative or useless electricity was knocked out by the storm

c : to get rid of : eliminate knocked out illegal gambling

3 : to tire out : exhaust knocked themselves out with work

4 : to cause (an opposing pitcher) to be removed from a baseball game by a batting rally

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Noun

He won the match by a knockout. He scored a knockout in the fourth round. She's a real knockout in that dress.

Adjective

The Wimbledon tennis tournament is a knockout competition. a knockout sports car that's the talk of the neighborhood

Verb

the entire staff knocked itself out getting the project finished on time