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1.
v. A word/phrase to use when there is nothing else to say, usually in place of a curse word. Origin in northern New Jersey
Teacher: Brian, what is 10 x 4?

Brian: I don't give a Thrack, go Thrack yourself, nigga!

Teacher: Oh my!!
by Lord Thrack The Greater January 11, 2013
 
2.
thrack (thra'k) vt. to perform a task in a violent, rapid, and non-virtuoso manner, esp in games of skill. v. to behave generally in this manner.
(Contraction of thrash and whack)
Danny won the game of foosball but it was a thrackfest
by Shuggy September 09, 2005