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Phrase(s): pinch-hit for someone
1. Fig. to bat for someone else in a baseball game. • Wally Wilson will pinch-hit for Gary Franklin. • Rodney Jones is pinch-hitting for Babe DiMaggio. 2. Fig. to substitute for someone in any situation. • Bart will pinch-hit for Fred, who is at another meeting today. • Who will pinch-hit for me while I am on vacation?
McGrawhill's American Idioms And Phrasal Verbs