knockout

knockout
noun
  1. an act of knocking someone out, especially in boxing
    (尤指拳击中)击倒对手取胜
    [as modifier]a knockout blow.
    击倒对手取胜的一拳。
    ■(Brit.)a tournament in which the loser in each round is eliminated
    (英)淘汰赛
    ■[in sing](informal)an extremely attractive or impressive person or thing
    (非正式)异常动人的人(或物),给人留下深刻印象的人(或物)
    he must have been a knockout when he was young.
    他年轻的时候一定非常引人注目。
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