by ROjikaru March 4, 2009

Possibly originating as a portmanteau of the terms moment of inertia and arm, moment arm has quickly become a much more awesome way of saying leverage.
by shdy January 3, 2008

A butch dyke in short-sleeves showing off very well-developed arms with well-defined muscles (but not steroid-type muscle).
Jenny: Your girlfriend has a really nice body. Her arms look really hot in short sleeves.
Carla: Oh yeah, I can barely stop myself from drooling. It's total arm porn.
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Sam (Samantha): Babe, now that I've started bulking up, I'm thinking of getting a tattoo on my arm. What do you think?
Laura: Oh baby, that would totally give you arm porn.
Carla: Oh yeah, I can barely stop myself from drooling. It's total arm porn.
----
Sam (Samantha): Babe, now that I've started bulking up, I'm thinking of getting a tattoo on my arm. What do you think?
Laura: Oh baby, that would totally give you arm porn.
by dosaguasdyke April 25, 2010

the competition between nations to develop weapons of warfare. it is now being taken once again into outer space; some countries ,do not recognize the idea of mutually assured destruction
by eric October 22, 2003

by Mr-Donz January 11, 2009

I swing at you with my Left Arm, and we'll go through a fight or two! No harm, no harm!
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by Bad C dev July 25, 2021

The long lasting pain/ache in the arm which takes the brunt of any inoculations. Usually takes a couple of days to recover, and until then rarely makes it above a 45 degree angle to the torso.
by ABC123<>^ November 8, 2009
