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Definition of "knockout" []

  • The act of knocking out. (noun)
  • The state of being knocked out. (noun)
  • A blow that knocks out an opponent. (noun)
  • Sports 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. (noun)
  • Sports The act of winning a boxing match in this way: won the fight by a knockout. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "knockout" in a sentence
  • "Several rodent models have identified UDT in knockout models of hoxa10, hoxa11, hox13, cgrp, insl3, and great genes."
  • "I was known as a knockout artist with one punch and was dubbed the dirtiest fighter on the continent."
  • "Winners by knockout: Of the 16 nations that have progressed to the second round of the World Cup, the three most successful in knockout matches are Italy, Brazil and Germany."