pop fly . pop fly {n.} A baseball batted high into the air but not very far from the plate. The batter hit a pop fly to the shortstop. Categories: add yours {n.} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2025 To section: P Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Discuss