powerhead
pow er head |ˈpou (-ə )rˌhed ˈpaʊərhɛd | ▶noun 1 informal a powerful egomaniac: record-industry powerheads. 2 any of various mechanical or electrical devices, including. • a submersible pump for an aquarium that creates current within a tank. • a vacuum-cleaner attachment that houses an independent motor that drives a carpet-beating rotating brush. See also beater bar. • the internal combustion engine of an outboard motor. • the power unit of an automatic garage door opener.
power |head ▶noun a part of an engine or other device that supplies power.