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1.
A snowboarding term referring to a large amount of snow, typically while its falling.
Its puking gnar butter on the mountains right now; there's almost three feet of fresh!!
by snowbase December 07, 2009
 
2.
The best and deepest powder found on the mountain while snowboarding/skiing
"I can not believe how deep that gnarbutter was!"
by Bryan Cazes February 19, 2008
 
3.
A term used to describe something that sucks and is completely funny at the same time.
Dude I was at this party and dis chick fuckin' fell on da steps. It was soooo Gnar Butter!
by Jennayyyyy November 06, 2005