stifling hot

:  the joint next above the hock in the hind leg of a quadruped (such as a horse or dog) corresponding to the human knee — see horse illustration

:  to kill by depriving of oxygen :  suffocate

:  smother

:  muffle

:  having a relatively high temperature

:  capable of giving a sensation of heat or of burning, searing, or scalding

:  having heat in a degree exceeding normal body heat

:  hotly

:  fast, quickly

:  a period of relatively high temperature :  a period of heat

:  one that is hot (such as a hot meal or a horse just after a workout)

:  heat, warm