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English definition of “knock up”

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knock up

verb uk phrasal verb with knock   /nɒk/ us    /nɑːk/
Players knock up before beginning a game of tennis or similar sport by hitting the ball to each other: The players have a couple of minutes to knock up before the match starts.
Translations of “knock up”
in Chinese (Traditional) (網球等運動中)賽前練習,賽前試打…
in Chinese (Simplified) (网球等运动中)赛前练习,赛前试打…
(Definition of knock up phrasal verb, verb from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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