nest egg . nest egg {n.} Savings set aside to be used in the future. Herb says he doesn't have to worry about his old age because he has a nest egg in the bank. Categories: add yours {n.} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2024 To section: N Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Post my comment