past master past master {n. phr.} An expert. Alan wins so often because he is a past master at chess. Categories: add yours {n. phr.} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2024 » In RussianTo section: P Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Discuss