baby boom . baby boom {n.} A sudden increase in the birth rate. The universities were filled to capacity due to the baby boom that followed World War II. Categories: add yours add yours children {n.} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2025 » In RussianTo section: B Subscribe to: American Idioms► Also consider the parent subscriptions (3)Idioms feedEnglish languageHome page and general feed Discuss Discuss