Someone who thrashes up the powder, the waves, or the streets with gnarliest amounts of awesome imaginable. Only a really rad dude can be a Gnar Star.
"Whoa man, look at him tear it up out there, he's a total Gnar Star.
by The Gnar Star August 17, 2009
adj-half gnarly, half gangstar, basically anthing that rocks
whoa dude... that sh!t was gnarstar!
by j-moné June 04, 2005