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(n) any place, domain, or area of competition that is dominated by an individual.
(While playing Mario Kart)

Jon: Hey, let's race on Coconut Mall.

Josh: Alright, you'll never beat me though, it's my boss course.

(Clint wins the race)

Clint: Josh I just totally raided your boss course.
by J.And2 August 03, 2010
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