look up any word, like sparkle pony:
 
1.
-that person in a group, who wherever they are, is constantly trying to keep the noise/speaking volume down.
-like a librarian who has taken on the job to arbitrarily hush everyone.
Chip- Keep it down you guys..
Jake- I'm trying to tell the story, who made you the arbitrarian?
by S. Gordon January 25, 2010