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.

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

(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.

Having, or capable of exerting power, potency or influence. / Leading to many or important deductions. / (mining) Large; capacious; said of veins of ore.

(Southern US) Synonym of very

(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.