(mechanical engineering) A system of interconnected gears.

Synonym of interrupter gear

A triggering device attached to the machine gun armament of fighter aircraft so that the gun could fire through the arc of a spinning propeller without the bullets striking the blades.

The lowest gearing available from a gearbox, typically in a motor vehicle or cycle.

The second gearing available from a gearbox. / (idiomatic, figuratively) Mediocre, sluggish performance.

The lowest gear available from a gearbox, typically in a motor vehicle or cycle. / One of the lower gears available from a gearbox, typically in a motor vehicle or cycle.

(automotive) That part of a gearbox involved in changing gear, including the lever and the forks attached to it. / (automotive, US, Canada) The lever or other interface a human uses to shift gears.

(informal, derogatory) The lowest gear on a vehicle.

(nautical) Any material, usually rope or canvas, used to protect sails, rigging, etc., at points where they are exposed to friction.

plural of negative gearing