/ Dictionary / Index G Gilson: Meaning and Definition of Find definitions for: Gil•son Pronunciation: (zhēl-sôn'), [key] 1884–1978, French historian. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Gilroy Gilsonite Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language