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a. The act of knocking out.
b. The state of being knocked out.
c. A blow that knocks out an opponent.
2. Sports
a. A victory in boxing in which one's opponent is unable to rise from the canvas within a specified time after being knocked down or is judged too injured to continue.
b. The act of winning a boxing match in this way: won the fight by a knockout.
3. Slang A strikingly attractive or impressive person or thing.
adj. also knock-out (nŏk′out′)
1. Capable of knocking someone out: a knockout punch; knockout drops put in a drink.
2. Strikingly attractive or impressive.
3. Genetics Having a specific single gene inactivated or removed by genetic manipulation: knockout mice used in an experiment.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
Ominously for his opponent in Liverpool he aims to deliver his most impressive knock-out tonight as he moves closer to a title shot.
Tribune News Network Doha Reigning champions Qatar marched into the knock-out stage of the men's handball event at the 18th Asian Games in Indonesia on Friday scoring a fluent 35-20 win over Iran in their third and last preliminary round contest at the GOR Popki Cibubur Hall in Jakarta.
"If we had gone all the way to the final it might have been increased, but the budget is set based on an exit from the first knock-out round.
Toxicologic studies are a national imperative, and the importance of the application of transgenic mice and knock-out technologies to these studies is widely recognized.
Lewis has won all but one of his paid bouts by way of knock-out - the other he took on a points decision when boxing with a hand injury.
Day and Jones will have a very hard task in getting through to the knock-out stages next week as there are four other tough men to beat, including former world champion Shaun Murphy, in their pool.
Supporters of the new plan believe that the 26-match league season is too long, the quality of the current two divisions is too variable and that the structure being suggested would free up time for a new limited-overs knock-out competition, thus allowing top sides match practice for the Lancashire and National Knock-Outs.
Vera has been involved in 20 fights in his professional career so far and winning seven by knock-out and losing seven, with his last two bouts in 2012 and 2013 ending in technical knock-outs.
Of Sanchez, Hamed says: "He looks big for a featherweight and his knock-out record is excellent.
Khan's last bout against Belarussian Vitali Martynov ended in a 75-second knock-out and led to criticism about the quality of opponent lining up to meet the Olympic silver medallist.
Now they will find themselves up against Lancashire, Yorkshire and Northumberland in three matches ahead of the knock-out stage.
His most spectacular win was a second round knock-out of Nuneaton rival Chris Emanuele at the Skydome in October, 2000.