/ Dictionary / Index G gyrocopter: Meaning and Definition of Find definitions for: gy•ro•cop•ter Pronunciation: ( jī'ru-kop"tur), [key] — n. autogiro. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. gyrocompass gyrofrequency 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