To arrange a system of gear wheels or pulleys etc such that the driven part rotates or moves slower than the driving part

To change the gear by which motion is transmitted from a powered shaft to another shaft, especially in a motor vehicle. / (idiomatic) To change pace or mode of operation.

All the protective clothing, shields and weaponry worn or carried by a force attempting to control a riot.

(UK, Australia, New Zealand, humorous, slang) The mouth.

plural of gear lever

plural of gear head

Alternative spelling of gearhead

A firefighter's protective clothing.

plural of gear train

plural of gear stick