play a part in . play a part in {v. phr.} To be instrumental in; have a role in; be concerned with. Some First Ladies play a greater part in political life than others. Categories: add yours {v. phr.} 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 Add my comment