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1.
M1
Primary road (motorway) of England. Runs from Leeds and London, except on Friday afternoons, when it becomes the largest car park in England.
I'm gonna be late, I'm stuck in traffic on the f@ckin' M1
by BucaBaby September 14, 2006
 
2.
M1
A generic military term.
M1 Abrams Tank
M1 Garand
M1 Carbine
M1 Tompson
by strekship May 30, 2005
 
3.
M1
Thats not completely true.

M1 was just a designation!
ever heard of the M1 thompson??
M1 bazooka?
(...235629 other examples..)
M1 other things
by Imme January 29, 2004
 
4.
M1
rapper from the group Dead Prez
M1 just dropped a solo album
by pfed June 07, 2006
 
5.
M-1
A first degree murder charge (hence the name M-one, dummies!)
I caught a' M-1 in '84
by ac degrees June 23, 2005
 
6.
M1
Also a shotgun

and tank
and bazooka
and rifle
M1 is not only a tank, assult rifle, bazooka
by george guarino February 19, 2005
 
7.
M1
Short for M1 Abrams, a 70 ton tank used by the US Army and some other NATO countries as well.
The M1 pratically owns the battlefield.
by GI Bro June 13, 2004