The term “cooler” refers to when you are dealt a very strong hand in poker only to be up against an opponent with an even better hand. Usually there is no way you can avoid getting away from the hand in situations like these.
EXAMPLE “I three-bet shoved with K-K and was snapcalled by an opponent holding A-A. What a cooler hand.”
Mother of all coolers (taken from reddit). This hand took place on PokerStars between ‘Luca$$$ino’ and ‘trivett123’.