To lose heat, to get colder.
I like to let my tea cool before drinking it so I don't burn my tongue.
To make cooler, less warm.
To become less intense, e.g. less amicable or passionate.
Relations cooled between the USA and the USSR after 1980.
To make less intense, e.g. less amicable or passionate.
To kill.
A decrease in temperature.
Refrigeration.
That cools.
(Asian English). Of food or medicine, according to traditional Chinese medicine: serving to cool or calm the body.