Baseball. a substitute who bats for a teammate, often at a critical moment of the game.
any substitute for another, especially in an emergency.
Origin 1910–15, Americanism
Sam is a pinch hitter for Ralph, who broke his wrist.]]> In school today we had a pinch hitter. Our teacher was sick.]]>Copyright 2007. Published by McGraw-Hill Education.]]>Dictionary of American Slang and Colloquial Expressions
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.