1 definition by #NurseMike

1. (noun) An urban derivative of the word "gains", referring to additional muscle mass acquired through lifting weights.

2. (noun) Any form of protein used within the diet of a bodybuilder consumed with the intent of increasing overall muscle mass.
(ex) "BRO! Check out these sick gainz!"

(ex) "Dude, I gotta cut this short. I need to get in my gainz every 2 hours!"
by #NurseMike November 28, 2016
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