/ Dictionary / Index P provost sergeant: Meaning and Definition of Find definitions for: pro'vost ser"geant Pronunciation: (prō'vō), [key] — Mil. Mil. the senior noncommissioned officer of a prison or other confinement facility whose chief duty is the supervision of prisoners and of the military police unit. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. provost marshal prow Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language