/ Dictionary / Index P prohibit: Meaning and Definition of Find definitions for: pro•hib•it Pronunciation: (prō-hib'it), [key] — v.t. to forbid (an action, activity, etc.) by authority or law: Smoking is prohibited here. to forbid the action of (a person). to prevent; hinder. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: prohibit (Thesaurus) pro-growth prohibition Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language