(UK, slang) To start performing a task effectively or start behaving better in general; to shape up.

Alternative form of get one's ass in gear

(music, slang, derogatory) The practice of extending a composition by repeating an earlier section but transposed to a higher pitch.

Alternative spelling of gear shift

(rare) To shift gears.

plural of gearshift

The lever used to change gear in a vehicle.

plural of gearstick

plural of gearset

A set of gears, as in a car or bicycle.