Top Definition
1)someone or something that literaly or metaphoricaly kicks ass

2) someone or something that causes great damage to anything it comes in contact with.

3) a large angery person who scares the shit out of you

4) a tremendously effective implement of destruction, usually a weapon

5) something someone declares themselves after kicking ass
stay away from that big guy over there, he's a murder machine

yo, that 1911 i just bought is a murder machine

(while standing over your half dead opponent) I Am A MURDER MACHINE!
by fuckov March 04, 2008
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