peeping Tom . peeping Tom {n.} A man or boy who likes sly peeping. He was picked up by the police as a peeping Tom. Categories: add yours 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 Idioms► Also consider the parent subscriptions (3)Idioms feedEnglish languageHome page and general feed Post my comment Post my comment