noun
plural heats
[noncount] :energy that causes things to become warmer
[noncount] :hot weather or temperatures
the level of temperature that is used to cook something [count]
usually singular
[singular] :a source of heat used for cooking something :the hot part of an oven, stove top, etc.
[noncount] chiefly US :the system that is used to provide warmth to a room or building
[noncount] strong and often angry feelings
the time when emotions are most strongly felt - used in phrases like in the heat of passion, in the heat of the moment, etc.
chiefly US informal
a the heat :pressure to do something
The expression if you can't stand/take the heat, get out of the kitchen means that you should not try to do a difficult job if you cannot deal with the pressure and problems that are part of the job.
[noncount] :criticism or abuse
[count] :one of several races or contests that are held in order to decide who will be in the final race or contest
in heat
US or Brit on heat - used to describe a female animal that is ready to have sex and is able to become pregnant
more heat than light
To produce or generate more heat than light means to cause anger without helping to make something better understood.
pack heat
US slang old-fashioned + humorous :to carry a gun
verb
heats; heated; heating
[+ obj] :to cause (something) to become warm or hot
heat up
[phrasal verb]
to become warm or hot
to become more active, intense, or angry
heat (something) up or heat up (something) :to cause (something) to become warm or hot