the act of female masturbation.

can be used as an insult as well as a verb in the same way as wanker is used both as a pejorative and to describe the act of a man masturbating.
"is she mashing it"

or

"that chick is such a masher"

or

if a woman cuts you off in traffic you can yell "you fucking masher"
by Man Lee Man November 1, 2010
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To annihilate or destroy. To Fuck up. To devour or "tear up."
Hey, ain't that the nigga that stole D's ipod?

Yeah, lets mash on this nigga!
by cbowling September 15, 2009
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To ride a bicycle furiously through traffic without any disregard for cars, traffic lights, pedestrians, stop signs, or the fucking man.
Hey let's go mash through venice beach and show those beach cruisers how to actually ride a bike right.

FUCK BRAKES, FIXIES FOR LIFE
by Mr. UCSD August 4, 2008
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1)Mobile Army Surgical Hospital.
2)One of the best shows to ever grace the television screen.
He joined a MASH unit to be like the people in MASH.
by 9 March 11, 2004
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This is the terminology used for someone to give use for a gun.
DRAW FOR DA MASH......
Draw for the gun
by $HIF7AR May 25, 2005
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Has multi definitions
1) -military- Mobile Army Surgical Hospital. Also TV show of same name.

2) -drugs- To smoke yourself into a state of near unconciousness

3) -UK Slang- Mashed potato's

4) -Urban street slang- To destroy, mangle, wreck.
1) He served in a mash unit in Korea

2) Tonight I'm gonna get mashed

3) 'Give us a bash at the bangers and mash like me mother used to make' (old music hall song)

4) He dissed me so I mash him up bad.
by black flag June 20, 2004
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