/ Dictionary / Index G gypster: Meaning and Definition of Find definitions for: gyp•ster Pronunciation: ( jip'stur), [key] — n. gyp (def. 3). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. gypsophila gypsum Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language