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1. A person who, while you are under the influence of LSD, appears to become a stumpy, woodland dweller with a withered face.

2. A person who you run into while under the influence of LSD who gives you a bad vibe. Synonyms include trip monster, baddie, and downer.
guy 1: Dude, you're face is all fucked up.

Guy 2: I'm a gnome I'm a gnome!

Guy 1: Ahh! Trip Troll!!!
by Idiot.Box March 12, 2007
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