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1. Used as an exclamation of victory. Named for the Triumph tr5, a rare automobile built in the United Kingdom between 1967-1968.

2. A farewell or "signoff" encouraging good fortune to friends or loved ones.
1. "Oh man, did you just see Johnathon bench press that Cadillac? tr5 baby!"

2. "Good luck getting the kangaroo back into the cage, I'm leaving. tr5."
by Penguinrecorder October 07, 2009
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