1 definition by altheaxcore

Cool bums who hang out on mill ave in tempe, arizona. Often these people are artists, who will make you things or preform for you if you give them attention.
Person A: Dude, Happy Cabbie made me a hat that looks like a fish out of balloons!

Person B: Dude, he's my favorite mill rat.
by altheaxcore April 22, 2007
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