Top Definition
The act of composing lyrics or the melody to a song/songs while high.
The Beatles did quite a bit of gnarshing towards the end of their legacy as a band.
by UpTop November 20, 2011
Skiing or Snowboarding while you are high.
After we hotboxed that gondola we went gnarshing for a couple hours.
by G0dzilla February 18, 2012
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