Definitions
1.verbTo lose heat, to get colder."I like to let my tea cool before drinking it so I don't burn my tongue."
2.verbTo make cooler, less warm.
3.verbTo become less intense, e.g. less amicable or passionate."Relations cooled between the USA and the USSR after 1980."
4.verbTo make less intense, e.g. less amicable or passionate.
5.verbTo kill.
6.adjectiveBrought to a lower temperature.
7.adjectiveBrought to a lower temperature by means of (often in compounds)."a water-cooled engine"
8.adjectiveBrought to a reduced degree of anger or fervour.