Merriam-Webster Collegiate Dictionary - hot

 I. adjective  (~ter; ~test)  Etymology: Middle English, from Old English hat; akin to Old High German heiz ~, Lithuanian kaisti to get ~  Date: before 12th century  1.  a. having a relatively high temperature  b. capable of giving a sensation of heat or of burning, searing, or scalding  c. having heat in a degree exceeding normal body heat  2.  a. violent, stormy a ~ temper a ~ battle; also angry got ~ about the remark  b.  (1) sexually excited or receptive  (2) sexy  c. eager, zealous ~ for reform  d. of jazz emotionally exciting and marked by strong rhythms and free melodic improvisations  3. having or causing the sensation of an uncomfortable degree of body heat ~ and tired it's ~ in here  4.  a. newly made ; fresh a ~ scent ~ off the press  b. close to something sought ~ on the trail  5.  a. suggestive of heat or of burning or glowing objects ~ colors  b. pungent, peppery  6.  a. of intense and immediate interest some ~ gossip  b. unusually lucky or favorable on a ~ streak  c. temporarily capable of unusual performance (as in a sport)  d. currently popular or in demand a ~ commodity  e. very good a ~ idea not feeling too ~  f. absurd, unbelievable wants to fight the champ? that's a ~ one  7.  a. electrically energized especially with high voltage  b. radioactive; also dealing with radioactive material  c. of an atom or molecule being in an excited state  8.  a. recently and illegally obtained ~ jewels  b. wanted by the police; also unsafe for a fugitive  9. fast a ~ new fighter plane a ~ lap around the track  • ~ness noun  • ~tish adjective  II. adverb  Date: before 12th century  1. ~ly  2. fast, quickly  III. noun  Date: 13th century  1. heat 1d(1) the ~ of the day  2. one that is ~ (as a ~ meal or a horse just after a workout)  3. plural strong sexual desire — used with the  IV. transitive verb  (~ted; ~ting)  Date: 1561 chiefly Southern, southern Midland, & British heat, warm — usually used with up