Definition of "knock-up" []

• A short practise session before a tennis match (noun)

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• "Maria Sharapova has in the past alienated opponents with her imperiousness at the pre-match knock-up."
• "Dizzy Thinks: Live Blog III: The celebrity knock-up skip to main"
• "Paul Mewies Sandie's spouse dislocated his finger in the knock-up - but bravely soldiered on."