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3.
A "Mech-Warrior" is any woman (or man) who wears high heeled shoes, is chubby and has big boobs that stand out like flak cannons although she (or he) is incable of properly walking in them. Mech-warriors are characterized by their awkward posture and halting gait while walking, like the giant robots in (no-Japanese) robot fighting games. A mech-warrior can be futher defined if the woman has a pronounced hunch in her back caused by the poor posure her high heeled shoes promotes (see "hunchback")
Tommy: "Damn that's a fine bitch!"

Timmy: "WHAT?? she is fugly and walks like the hunchback of notre dame, man"

Jimmy: "yeah, she's a total mech-warrior"
by Sepulverture June 15, 2009
 
1.
A mecha-combat game based on the Battletech literature/board-game series. Very popular because nothing beats giant mecha robots blowing shit up.
Mechwarrior 4 kicks ass.
by Crono August 27, 2003
 
2.
Almost anybody who pilots a BattleMech. There are a some n00bs out there who think they are Mechwarriors, but they ain't! They wind up smok'n wrecks not long out of the spawn. It takes a real Mechwarrior to take down a 100 ton Dashi with a 45 ton Shaddowcat.
That Glendor, now he's a real Mechwarrior.
by Mech Driver October 07, 2005