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Someone who obsessively checks tracking updates on goods being delivered like it's going to make it get there quicker.
Mike - Everytime I walk by John's cube he is on the UPS website checking the status of a delivery.

Bob - Yeah, that dude's a track fiend!
by bigtimejdub May 04, 2011
1.A person "addicted" to making music tracks, usually owning a recording studio
2.Music is this person's life they will kill to continue making their music
3.Beat maker, producer
Person 1:"Have you seen Ben?!?!"
Person 2:"yeah,dude is such a trackfiend"
Person 1:" Word...He eats,sleeps,and breathes music."
by liQuidCracK_347 February 05, 2008