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11.
Sometimes used in lingo associated with African American gangs, cooler often means the stomach or abdominal area. Just as the grill means mouth, the cooler means stomach.
"I got into a fight and that asshole punched me in my cooler, bruh!"

In N.W.A.'s hit, "Dopeman" the following line was used:

"Yo, Mr. Dopeman, you think you're slick
Ya sold crack to my sister and now she's sick
But if she happens to die because of your drug
I'm puttin' in your cooler, a .38 slug!"
by Tengo Prisa April 21, 2013
 
1.
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
 
2.
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 29, 2004
 
3.
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
 
4.
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 27, 2007
 
5.
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!"
by Uncle Larry January 26, 2010
 
6.
singular- cooler

One solid alcoholic beverage that contains .5% alchol. This beverage is the biggest wankster drink ever. Commonly sold at such stores as IGA, this drink is the best wannabe drink of all time.
"Hey dude, this poop is getting boring, lets hop on over to IGA and get coolers!"

"oya once"
by C-Lub Ndawg January 08, 2005
 
7.
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