A button of a computer, a video game console, or similar device, that when pressed, causes the device to be either shut down or powered up.

A surname.

Alternative spelling of willpower

(politics) Currently ruling; being the present controlling authority, as of a government or country.

(of a device) Having its own source of power, or a named source.

simple past tense and past participle of power

(mathematics) Indicating an exponent.

(transitive) To provide power for (a mechanical or electronic device). / (transitive) To hit or kick something forcefully. / To enable or provide the impetus for.

(Singapore, colloquial) Impressive.

The ability to do or undergo something. / (countable) The ability to affect or influence. / Control or coercion, particularly legal or political (jurisdiction).