/ Dictionary / Index H hatpin: Meaning and Definition of Find definitions for: hat•pin Pronunciation: (hat'pin"), [key] — n. a long pin for securing a woman's hat to her hair, often having a bulbous decorative head of colored glass, simulated pearl, or the like. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hatpin (Thesaurus) Hatikvah* hatrack Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language