flash card . flash card {n.} A card with numbers or words on it that is used in teaching, a class. The teacher used flash cards to drill the class in addition. Categories: add yours {n.} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2024 » In RussianTo section: F Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Discuss