A kick-ass, musically talented, athletic man of overall European descent. A tanister can usually be found in the mountains shirtless, playing rocking guitar solos, and swinging sharp blades dangerously. The name tanister is taken from the Gaelic word tanist, meaning the process of finding the chief of the clan. In other words, a tanister is a judge of the people.
"Dude, what's the noise?"
"It's just a tanister rocking out on that snowy mountain top."