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!
by ROI Guy February 26, 2007
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
by ricky roma November 18, 2003
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.
by captain poopypants November 30, 2004
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
by shazam-what-what-69 May 28, 2007
A cooler is a person who is a nark, or negative person particulary in relation to gambling or punting.

A Cooler is also a name for a pessimistic person who enjoys watching people or events fail.
Person 1 "I Just put $100 bucks on Titans to win the game"

Person 2 "The Titans can't possibly win this game"

Person 1 " Thanks alot Cooler, You just Cooled the bet"
by davethecooler April 28, 2013
Apart from the orginal word of cooler which most people know what it means. In casino terms, it is someone that has bad luck to make other people lose.
I didn't win coz that stupid cooler was always leaning over my shoulder all the time.

I reckon that guy I played blackjack with was a cooler.
by Mr Corrupt October 29, 2004
The one who runs the show. What he says goes. The one who is in charge of the bouncers at a club, they see everything. Usually they earn $5000 up front, $500 a night, CASH
To protect my investment I've hired the best damn cooler in the business. (editors note: Wade garrett is the best)
by captain poopypants November 13, 2004