FluentPlex

knockout

/ˈnɑk.oʊt/ noun B2
  1. The act of making one unconscious, or at least unable to come back on one's feet within a certain period of time; a TKO. · The boxer scored a knockout on his opponent.
  2. The deactivation of anything.
  3. Something wildly popular, entertaining, or funny. (informal) · If you've ever had a sack race, you know it's a real knockout for kids and adults alike.
  4. A very attractive person, especially a beautiful woman. (informal)
  5. A partially punched opening meant for optional later removal. · They left a knockout in the panel for running extra wires someday.
  6. The deactivation of a particular gene.
  7. A creature engineered with a particular gene deactivated.
  8. An event where a foreground color causes a background color not to print.

Plural knockouts

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Words, meanings, pronunciations and translations from Wiktionary (CC BY-SA 4.0); how common each word is from wordfreq. Made into this dictionary by FluentPlex.