big fly

noun

baseball, informal

: home run

Throughout the 1987 season, batters hit a big fly once every thirty-two at bats, a ridiculous increase over 1986, when batters homered once every thirty-seven at bats.

—David Vincent et al., The Midsummer Classic: the Complete History of Baseball's All-Star Game, 2001

Word History

First Known Use

1986, in the meaning defined above

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