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30.
"Man - gash" a.k.a. the male version of the slang word "gash" in reference to somebody you are "on"

Used primarily amongst UK youths, usually ironically
"Is Sophie going to the party tonight?"

"Sorry mate, I think she's coming with her mash"
by Littlun November 15, 2009
 
1.
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 03, 2008
 
2.
also known in accent as marsh. meaning to have sex
blud are u guna mash her?
by rude_gyal2006 January 11, 2006
 
3.
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
 
4.
Mash means to have sex
i wanna mash tonight
by Zainah January 04, 2006
 
5.
Mansion
Apartment
Shack
House

A popular kids' game where by picking 5 boy/girls' names, 5 cars, 5 car colors, 5 jobs, 5 locations, 5 different numbers of kids, and your "favorite number." Under all these lists you put Mansion, Apartment, Shack, House. Count with your "favorite number," marking off an item as you hit that number, until one of each list is left. You should have your husband/wife, # of kids, car, car color, job, location, and type of house you live in. Purely entertainment of course.
Guy 1:"Dude I played M.A.S.H. last night!!!"
Guy 2:"You're like what....15? A little old for that aren't you???"
by Flamescream January 28, 2006
 
6.
To hit on someone or fool around with them. Synonomous with mack
He was mashing on that chick so bad.

We WILL mash
by JKix May 17, 2005
 
7.
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 10, 2004