Definitions of heat:

• noun:   intense passion or emotion
• noun:   the sensation caused by heat energy
• noun:   a preliminary race in which the winner advances to a more important race
• noun:   a form of energy that is transferred by a difference in temperature
• noun:   the presence of heat
• noun:   applies to nonhuman mammals: a state or period of heightened sexual arousal and activity
• noun:   utility to warm a building

  Example: "The heating system wasn't working"

• verb:   provide with heat

  Example: "Heat the house"

• verb:   make hot or hotter

  Example: "Heat the soup"

• verb:   gain heat or get hot

  Example: "The room heated up quickly"

• verb:   arouse or excite feelings and passions