cooler

n. container for keeping food or beverages cool; prison cell for an uncontrollably violent inmate (Slang); cold alcoholic drink with a fruity flavor (often wine-based)

adj. slightly cold; indifferent, uncaring, aloof; composed, deliberate; great, terrific (Slang)

A cooler most commonly is an insulated box, used to keep food or drink cool.  Ice cubes which are very cold are most commonly placed in it to make the things inside stay cool.  Ice packs are sometimes used, as they either contain the melting water inside, or have a gel sealed inside that also stays cold longer than plain water.
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Noun
1. a refrigerator for cooling liquids
(synonym) ice chest
(hypernym) refrigerator, icebox
(derivation) cool, chill, cool down
2. an iced drink especially white wine and fruit juice
(hypernym) beverage, drink, drinkable, potable
(derivation) cool, chill, cool down
3. a cell for violent prisoners
(synonym) tank
(hypernym) cell, jail cell, prison cell

Noun
1. the quality of being cool; "the cool of early morning"
(hypernym) coldness, cold, low temperature
(derivation) chill, cool down
2. great coolness and composure under strain; "keep your cool"
(synonym) aplomb, assuredness, poise, sang-froid
(hypernym) composure, calm, calmness, equanimity
Verb
1. make cool or cooler; "Chill the food"
(synonym) chill, cool down
(antonym) heat, heat up
(hypernym) change, alter, modify
(hyponym) quench
(cause) chill, cool down
2. loose heat; "The air cooled considerably after the thunderstorm"
(synonym) chill, cool down
(antonym) heat, hot up, heat up
(hypernym) change state, turn
3. lose intensity; "His enthusiasm cooled considerably"
(synonym) cool off, cool down
(hypernym) change
Adjective
1. neither warm or very cold; giving relief from heat; "a cool autumn day"; "a cool room"; "cool summer dresses"; "cool drinks"; "a cool breeze"
(antonym) warm
(similar) air-conditioned
(see-also) cold
(attribute) temperature
2. marked by calm self-control (especially in trying circumstances); unemotional; "play it cool"; "keep cool"; "stayed coolheaded in the crisis"; "the most nerveless winner in the history of the tournament"
(synonym) coolheaded, nerveless
(similar) composed
3. (color) inducing the impression of coolness; used especially of greens and blues and violets; "cool greens and blues and violets"
(antonym) warm
(similar) cold
4. psychologically cool and unenthusiastic; unfriendly or unresponsive or showing dislike; "relations were cool and polite"; "a cool reception"; "cool to the idea of higher taxes"
(antonym) warm
(similar) chilly, unfriendly
(see-also) unagitated
(attribute) emotionality, emotionalism
5. used of a number or sum and meaning without exaggeration or qualification; "a cool million bucks"
(similar) unqualified
(classification) colloquialism
6. fashionable and attractive at the time; often skilled or socially adept; "he's a cool dude"; "that's cool"; "Mary's dress is really cool"; "it's not cool to arrive at a party too early"
(similar) fashionable, stylish
(classification) colloquialism

adj. cool, great, excellent

(n.)
That which cools, or abates heat or excitement.
  

(n.)
Anything in or by which liquids or other things are cooled, as an ice chest, a vessel for ice water, etc.