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1 definition by Ethereal Magnanimus

 
1.
In the subculture of marijuana slang, compassing is a tool used to assist a smoker who is using a pipe. The person who took the hit directly before the person who now has the bowl says, for example "Northeast," if the green is to the top right of the bowl (farther away from the smoker), or "Southwest," if the green is to the bottom left of the bowl (closer to the smoker).
Bob "Hey bro, I didnt get a good hit, can you give me a compass?"

Dave "Sure man, my last hit was Northwest."

Bob "Thanks! That was much better."

Dave "Don't thank me, thank whoever invented Compassing."
by Ethereal Magnanimus November 23, 2007