A surname.

(geology, geography) A large-scale anticline; a large upward lift in the earth's surface.

plural of gear train

plural of gear stick

plural of gear shift

(idiomatic) Proceeding fully, quickly, or completely; thoroughly begun and in progress.

(automotive, informal) A transmission with a sliding mesh, used in older vehicles; gear changes are often accompanied by loud noises.

(mineralogy) A monoclinic white mineral containing aluminum, calcium, fluorine, hydrogen, and oxygen.

(automotive) A mechanism which changes gears in a vehicle.

plural of geanticline