go under the hammer . go under the hammer {v. phr.} To be auctioned off. Our old family paintings went under the hammer when my father lost his job. Categories: add yours {v. phr.} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2024 To section: G Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Leave my opinion