hotheaded

A saw with a continuously rotating circular blade; used for cutting trees. / A saw used for cutting hot metal.

The tap (of a pair) that produces hot water (the other being the cold tap)

(metallurgy) A fracture in a metal casting that occurs during solidification as a result of hindered contraction.

the formation of a fracture in a metal casting during solidification as a result of hindered contraction

Becoming very vocal or even violent when angered or frustrated.

(photography) A fixture on a camera to which a separate flash unit may be attached, equipped with an electrical connection which transmits the firing signal from the camera to the flash.

(UK, Australia, New Zealand) A sudden, but brief, sensation of heat over the entire body; a common symptom of the menopause.

(slang) The electric chair. / The seat occupied by a game show contestant at a stage where they are answering questions alone. / (by extension) Any stressful situation.

(informal) The one of a group that is favored greatly above any of the others.