the world > matter > properties of materials > temperature > heat > be hot [verb (intransitive)] > have or get the sensation of heat > suffer oppressive heat (4)
To be overpowered or faint with heat; to suffer oppressive heat, swelter, ‘melt’. †Also reflexive.
intransitive. To be oppressed with heat; to sweat profusely, languish, or faint with excessive heat.
intransitive. To ‘stew’, suffocate.