/ Dictionary / Index G guidon: Meaning and Definition of Find definitions for: gui•don Pronunciation: (gīd'n), [key] — n. Mil. a small flag or streamer carried as a guide, for marking or signaling, or for identification. the soldier carrying it. Cf. colorbearer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Guido d'Arezzo guidwillie Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language