Top Definition
The part of the arm that spans from the elbow to the wrist.
People that work with their hands might have muscular forearms.
by fiddly May 23, 2006

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A symbol of total badassedness. Usually developed from hundreds of sessions of jacking off, and pulling back pipe on a drilling rig. Having massive forearms apparently makes it impossible to be beaten in arm wrestling.
Eric: "apparently pauls forearms are so big its physically impossible to beat him in arm wrestling; you'd have to break his arm to beat him bc they're so big it is impossible for his wrist to touch the table!"
Brian: "then why'd he get knocked the fuck out at the bar the other day?"
by rick rowsky January 08, 2009

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fantasy football forum.
"the geeks expressed their banter in the forearms"
by Troy Verner April 08, 2003

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Collarbone Dave's penis
"hey, you're forearm sized"
by Anonymous October 22, 2003

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To call a guy 'forearm' it refers to their genitals being as large at their forearm. So really, it's a compliment .
"Woah dude, your dick is the size of your forearm."
Or
"Hey, forearm !"
by Alex171777 May 19, 2016

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