(plural noun, dated) A period of hot weather.

(MTE, slang) To get riled up about something, or to be in a state of anger. / Very agitated, angry or impassioned. / (usually not comparable) Made warm or hot by some means.

simple past tense and past participle of heat

Alternative form of in heat

(uncountable) Thermal energy. / (uncountable) The condition or quality of being hot. / (uncountable) An attribute of a spice that causes a burning sensation in the mouth.

(transitive) To cause an increase in temperature of (an object or space); to cause to become hot (often with "up"). / (intransitive) To become hotter.

(rare) Hot.

A situation has reached a point of great commotion, energy, or activity.

A petroleum product used as fuel in a heating system and not requiring preheating for use.

present participle of heat up