Moderately cold; being of a temperature between hot and cold; as cool air; cool water.

Not ardent or zealous; not angry; not fond; not excited by passion of any kind; indifferent; as a cool friend; a cool temper; a cool lover.

Not retaining heat; light; as a cool dress.

A moderate state of cold; moderate temperature of the air between hot and cold; as the cool of the day; the cool of the morning or evening.

To allay heat; to make cool or cold; to reduce the temperature of a substance; as, ice wools water. Send Lazarus, that he may dip the tip of his finger in water, and cool my tongue. Luke 16:24.

To moderate excitement of temper; to allay, as passion of any kind; to calm, as anger; to abate, as love; to moderate, as desire, zeal or ardor; to render indifferent.

To become less hot; to lose heat. Let tea or coffee cool to the temperature of the blood, before it is drank.

To lose the heat of excitement or passion; to become less ardent, angry, zealous, or affectionate; to become more moderate. Speak not in a passion; first let your temper cool.