/ Dictionary / Index P postmaster: Meaning and Definition of Find definitions for: post•mas•ter Pronunciation: (pōst'mas"tur, -mä"stur), [key] — n. the official in charge of a post office. (formerly) the master of a station that furnished post horses to travelers. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: postmaster (Thesaurus) postmark postmaster general Related Content Daily Word Quiz: penchant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language