/ Dictionary / Index A ammo: Meaning and Definition of Find definitions for: am•mo Pronunciation: (am'ō), [key] — n. Informal. ammunition. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ammo (Thesaurus) Ammishaddai ammocete Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language