A term refering to a girl meaning she is a bitch, whore, slut, lier, cheater, conniving, shady, pretty much all the above.
"Dude did your hear about whats her face last night?"
"Yea bro, she gets with every guy in sight. She is such a treasy."
"Im done with her this time i swear!"
"Its about time man! I told you she was a treasy."