to boot . to boot {adv. phr.} In addition; besides; as something extra. He not only got fifty dollars, but they bought him dinner to boot. Compare: FOR GOOD MEASURE, IN THE BARGAIN, THROW IN. Categories: add yours {adv. phr.} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2024 » In RussianTo section: T Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Discuss