Definition of "gear"
gear
/ɡɪə(ɹ)/
noun
countable and uncountable, plural gears
(uncountable) Equipment or paraphernalia, especially that used for an athletic endeavor.
(countable, automotive, cycling) A particular combination or choice of interlocking gears, such that a particular gear ratio is achieved.
(uncountable, slang) Recreational drugs, including steroids.
(uncountable, archaic) Stuff.
verb
third-person singular simple present gears, present participle gearing, simple past and past participle geared