Top definition
One who has mastered the art of being cool.
Sure, Julio stole the only girlfriend you've ever had but that's why he's the freakin' Cool Master
by Julio June 09, 2004
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2
Used to settle that all parties agree to act upon a previously stated action.
A: OK
B: Why not?
C: Coolmasters. Let`s get going then peeps!
by boogie1444 May 03, 2009
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3
Someone that is really really really super cool
by aaron cayabyab October 10, 2007
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