plural of second gear

The ratio of the speeds of rotation of the initial and final gears in a gear train.

(Britain) The lever used to change gears in a motor car.

plural of gear ratio

(intransitive, idiomatic) To prepare for an activity. / (intransitive, idiomatic) To put on special clothing or equipment.

plural of gear wheel

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.