showing no friendliness towards a person or enthusiasm for an idea or project
he gave a cool reception to the suggestion for a research centre
fashionably attractive or impressive
he made no concessions to fashion, yet somehow he was hip and cool
I always wore sunglasses to look cool
used to emphasize the size of an amount of money
research for a new drug can cost a cool £50 million
a fairly low temperature
the cool of the night air
calmness; composure
he recovered his cool and then started laughing at us
the quality of being fashionably attractive or impressive
all the cool of high fashion
become or make less hot
we dived into the river to cool off
cool the pastry for five minutes