Top definition
Noun:
A group of adolescents that hail from northern Massachusetts who enjoy taking part in haggard activities

Verb:
The act of causing neighborhood chaos, rowdiness, etc.
"I heard UA was out last night, that explains why I saw a burning heartagram, and my car has no more emblems on it."

"Man, my house was totally assaulted last night, i powerwashed the paintballs and eggs off this morning."

"Lets go Urban it up."
by anonymous March 29, 2004
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2
a group of n-words who wreak havoc around the hood next to sunset lake
UrbanAssault was the group responsible for the flaming football incident.
by N-Word T February 26, 2004
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