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A hand in poker in which a person with a very strong hand (often the 2nd best possible hand) is beaten by the best possible hand (usually a very rare full house, four of a kind, or straight flush). The 2nd best hand is so strong that it is impossible to fold, usually resulting in the loss of a lot of money and sometimes, an existential crisis.
I wasn't letting go of my Ace-high flush. How could I put him on a straight flush? What a cooler!
cooler by ROI Guy February 27, 2007
A term used to describe someone whow either knowingly (usually found in casinos) or unknowingly (usually in a bar) ruins a hot streak or situation.

When assosciated with the ruining of any type of foundation trying to be laid with picking up chicks, it is often accompanied by a fierce blowing wind sound caused by the offender, which in turn leads to his poor friends freezing instantaneously like cartoon characters.
Barry: "Hey Garry did you get any ass last night?"

Garry: "No way bro! That Andrew kid was being such a cooler!"
Cooler by Uncle Larry January 27, 2010
a third party hired to "run the show". They have final say, and are basically hired as a consultant of such things as bar staff, security and bouncers, bar design, attitude, and alcohol. They have no affiliation with the club other than that they are there to striaghten up the mess. For a nice buick call....
To protect my investment I've hired the best damn cooler in the business.
cooler by captain poopypants November 29, 2004
synonym for jail

also clink, iron city, lockdown, tank, and bighouse
This kid I went to school with got thirty days in the cooler for fleeing the police while drunk
cooler by ricky roma November 18, 2003
A sweet alcoholic beverage. Usually fruity flavored and with vodka. Mike's hard lemonade, smirnoff fruit flavored ones..
It took me 5 coolers before I got tipsy! next time i'm getting a two six
cooler by shazam-what-what-69 June 16, 2007
A villain from the popular anime, Dragon Ball Z. He's appeared in 2 movies, and he's the villain of both.
He is the brother of Frieza. And he's achieved a form further than Frieza, where he is stronger.
Plus he can blow up a planet with his finger and not even break a sweat.
Cooler is WAYYY cooler than Frieza!