Cool — Defs

01 a. Moderately cold; between warm and cold; lacking in warmth; producing or promoting coolness.

1.
Moderately cold; between warm and cold; lacking in warmth; producing or promoting coolness.
“Fanned with cool winds.” — Milton.
2.
Not ardent, warm, fond, or passionate; not hasty; deliberate; exercising self-control; self-possessed; dispassionate; indifferent; as, a cool lover; a cool debater.
“For a patriot, too cool.” — Goldsmith.
3.
Not retaining heat; light; as, a cool dress.
4.
Manifesting coldness or dislike; chilling; apathetic; as, a cool manner.
5.
Quietly impudent; negligent of propriety in matters of minor importance, either ignorantly or willfully; presuming and selfish; audacious; as, cool behavior.
“Its cool stare of familiarity was intolerable.” — Hawthorne.
6.
Applied facetiously, in a vague sense, to a sum of money, commonly as if to give emphasis to the largeness of the amount.
“He had lost a cool hundred.” — Fielding.

“Leaving a cool thousand to Mr. Matthew Pocket.” — Dickens.

02 n. A moderate state of cold; coolness; -- said of the temperature of the air between hot and cold; as, the cool of the day; the cool of the mo…

1.
A moderate state of cold; coolness; -- said of the temperature of the air between hot and cold; as, the cool of the day; the cool of the morning or evening.

03 v. t. To make cool or cold; to reduce the temperature of; as, ice cools water.

imp. & p. p. Cooled; p. pr. & vb. n. Cooling

1.
To make cool or cold; to reduce the temperature of; as, ice cools water.
“Send Lazarus, that he may dip the tip of his finger in water, and cool my tongue.” — Luke xvi. 24.
2.
To moderate the heat or excitement of; to allay, as passion of any kind; to calm; to moderate.
“We have reason to cool our raging motions, our carnal stings, our unbitted lusts.” — Shak.

Phrases & compounds

To cool the heels — to dance attendance; to wait, as for admission to a patron's house.

04 v. i. To become less hot; to lose heat.

1.
To become less hot; to lose heat.
“I saw a smith stand with his hammer, thus, the whilst his iron did on the anvil cool.” — Shak.
2.
To lose the heat of excitement or passion; to become more moderate.
“I will not give myself liberty to think, lest I should cool.” — Congreve.