Noun : the heat of an oven. ,moderate heat. ,unpleasant heat. ,the heat of a fever; the feeling of heat caused by physical exertion. ,He spoke with much heat and at great length. ,the heat of battle; the heat of passion. ,In the heat of his hasty departure he forgot his keys. ,The painting was finished at a heat. ,All guards carry some heat. ,to be in heat.    From Dictionary.com.