1 definition by shdy

Top Definition
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.
I can't get this damn bolt to turn. We need more moment arm.
by shdy December 10, 2007
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.