Meaning: knockout 
n.
a very attractive or seductive looking woman
a blow that renders the opponent unconscious
adj.
very strong or vigorous
be a knockout Idiom, Proverb
knockout
knockout
be a knockout
slang1. To be beautiful. Especially acclimated of women. Remember Plain Paula Jane from aerial school? Well, she's a knockout now, and she's dating Mike Miller!2. To be a abundant success. I anticipate this absolution is activity to be a absolute knockout. Abundant job, everyone!Learn more: knockout
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More Idioms/Phrases
knock the living daylights out of someone knock the wind out of his sails knock them down, drag them out knock up knock you down a peg knock you out knock your socks off knocked out knockout know better know by heart know inside out know-it-all know like the back of your hand know the first thing... know the ropes know the scoreArrayknock the living daylights out of someone knock the wind out of his sails knock them down, drag them out knock up knock you down a peg knock you out knock your socks off knocked out knockout know better know by heart know inside out know-it-all know like the back of your hand know the first thing... know the ropes know the score be a great one for something/for doing something be a great/firm believer in something be a greenhorn be a ham be a handful be a handsome devil be a happy camper be a hard act to follow be a heck of a (person or thing) be a hell of a (person or thing) be a hell of a drug be a helluva drug be a hit with (someone) be a hoot be a hop, skip, and (a) jump be a household name be a household word be a howling success be a huckleberry above (one's) persimmon be a huckleberry above a persimmon be a huckleberry over (one's) persimmon be a hunk be a jagoff be a keeper be a killjoy be a knockout be a laugh a minute be a laugh riot be a law unto (itself) be a law unto (oneself) be a law unto yourself be a lemon be a license to print money be a litterbug be a little bit off be a little dicey be a little off be a load off (one's) mind be a long drink of water be a long shot be a long time coming be a looker be a loud and proud (something) be a loudmouth be a man be a man/woman of his/her word be a marked man/woman be a mass of (something) be a mass of something be a matter of (doing something) be a matter of opinion
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Dictionary of similar words, Different wording, Synonyms, Idioms for Idiom, Proverb be a knockout
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