Gear

From Old Norse gervi.

(countable and uncountable; plural gears)

(uncountable) equipment or paraphernalia, especially that used for an athletic endeavor.
Clothing; garments.

(countable) a wheel with grooves (teeth) engraved on the outer circumference, such that two such devices can interlock and convey motion from one to the other.
(countable) a particular combination or choice of interlocking gears, such that a particular gear ratio is achieved.
(countable) A configuration of the transmission of a motor car so as to achieve a particular ratio of engine to axle torque
(slang) recreational drugs

2003, Marianne Hancock, Looking for Oliver (page 90)Have you got any gear? Dominic, have you got any acid?

1662, Henry More, , Book III, A Collection of Several Philosophical Writings of Dr. Henry More, p. 113:"When he was digged up, which was in the presence of the Magistracy of the Town, his body was found entire, not at all putrid, no ill smell about him, saving the mustiness of the grave-Clothes, his joynts limber and flexible, as in those that are alive, his skin only flaccid, but a more fresh grown in the room of it, the wound of his throat gaping, but no gear nor corruption in it; there was also observed a Magical mark in the great toe of his right foot, viz. an Excrescency in the form of a Rose."

LatimerThat servant of his that confessed and uttered this gear was an honest man.

Full definition of gear

(engineering, transitive) To provide with gearing; to fit with gears in order to achieve a desired gear ratio.
(engineering, intransitive) To be in, or come into, gear.
to dress; to put gear on; to harness.