A slutty girl who acts like a whore and hook up with lots of people. It comes from the phrase stravvy. They're usually gross cumbuckets.
Stop being such a strav.

Guy 1: I just hooked up with Melissa. Guy 2: Dude, Melissa is such a strav. I heard she fucked like 40 guys.
by Yeeeeeeerrrrrrrrrrrrrrrp January 17, 2011
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A party or gathering of friends.
Abbrev. of "Extravaganza"
Jimmy's having a strav over at his house tonight.
by Ian Aitken May 12, 2005
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