Top Definition
The Soviet military intelligence organization.
GRU - Glavnoye Razvedyvatel'noye Upravleniye
by AMBIDDY-1 September 03, 2012
1 more definition
A direct address applied only to the coolest of cool, or the lamest of lame. It is sort of a double-edged sword. The word is sometimes ambiguous in its usage.
Gru, you really stink OR Gru, you rock.
by surrealfx July 10, 2005

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