When someone is using anabolic steroids to increase muscle gains.
That guy is jacked, he must be on gear.
by Legatron November 5, 2017
(Noun) Name given collectively to IV drug use paraphernalia.
I know Jerry’s got his gear stashed here somewhere. It’s got everything anyone would ever need to put one in their arm.
by Nikki Stixx April 4, 2020
A slang term used for the drug methamphetamine in Australia.
'Hey man are you staying out all night tonight?'

'Not unless you can hook me up with some gear?'
by slobbyoyster February 18, 2013
That dude is huge i wonder how much gear hes on?
by Chi-Chi January 29, 2004