1. (p. pr. & vb. n.) of Gear.

2. (n.) Harness.

3. (n.) The parts by which motion imparted to one portion of an engine or machine is transmitted to another, considered collectively; as, the valve gearing of locomotive engine; belt gearing; esp., a train of wheels for transmitting and varying motion in machinery.

Hydromatic automatic transmission differential differential gear freewheel gear gear train gearbox gearing gearshift gearwheel high intermediate low neutral overdrive rack reverse standard transmission stick shift synchromesh transmission