n. A gatstar is an individual who is particularly skilled at the firing of handguns, also called 'gats.'
Gangbanger 1: I ain't runnin' from no muthafuckin' cops, I ain't no trackstar.
Gangbanger 2: But you is a gatstar!
Gangbanger 2: But you is a gatstar!
by beefstew69 June 1, 2009