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1.
Short name of Muse's awesome song 'Time Is Running Out'.
"Did you see TIRO live in HAARP? I like Matt's screams!"
by halamadrid September 04, 2008
12 5
 
2.
True If Rubbed Out

Added to the end of written insults (most likely graffiti) to say that even if it is removed, then the fact remains that the insult is true. Usually based around truth.
Rusty is Gayyyyyyyy TIRO
by Frankster200 September 10, 2009
3 3
 
3.
Spanish slang for line of cocaine
Hazte un tiro, tío!
Make us a line, mate!
by fonsucu January 20, 2009
2 6