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1.
n. The remaining mozzarella cheese stuck to the bottom of a pizza box, only eaten as a last result.
After spening all of my money on Beer, I had no choice but to eat the boxarella.
by APalmer74 April 24, 2006
 
2.
The leftover cheese stripes melded to the cardboard at the bottom of a pizza box; to be scraped and eaten in desperate situations.
"My stoner roommate even ate the boxarella last night."
by waitsfan75 April 25, 2006
 
3.
the narrow strips of coagulated cardboard and mozzarella cemented to the bottom of the pizza box
Dude! Don't eat the boxarella; it's a week old.
by Royce Murhpy April 14, 2006