Gyrfëydd, n. driver; racer
Gyriad, n. a driving; a racing
Gyriedydd, Gyrwr, driver, racer
Gyrn, a. imperious; supreme
Gyrod, n. a driving; impulsion
Gyrol, a. driving; impulsive
Gyrthiad, n. touching; dashing
Gyrthio, v. to touch; to push
Gyrthiol, a. coming in contact
Gyru, v. to drive, to race; to send, to convey