(US, Midwest) A frankfurter, a hot dog.

Alternative form of red-hot

(simile, colloquial) Extremely hot (all senses)

plural of hot ticket

Admission to an event, when particularly desirable or hard to obtain. / (by extension) A thing that is currently enjoying great popularity.

Easily angered or excited

impetuous and rash; hot-headed

hot seat

The heated cathode of a thermionic valve

preheated air blown into a blast furnace