/ Dictionary / Index H headmaster: Meaning and Definition of Find definitions for: head•mas•ter Pronunciation: (hed'mas'tur, -mä'stur), [key] — n. the person in charge of a private school. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: headmaster (Thesaurus) head margin headmistress Related Content Daily Word Quiz: banshee Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language