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.

The ability to do or undergo something.

(social) The noun "power" represents the ability to coerce, influence, or control, as well as the control or coercion exercised by legal or political authorities, the government, or influential entities such as nations or companies.

(physical, uncountable) A noun "power" represents effectiveness, physical force or strength, electricity or a supply of electricity, a measure of the rate of doing work or transferring energy, and the strength by which a lens or mirror magnifies an optical image.

Any of the elementary forms or parts of machines: three primary (the lever, inclined plane, and pulley) and three secondary (the wheel-and-axle, wedge, and screw).

(trucking) A tractor.

(physics, mechanics) A measure of the effectiveness that a force producing a physical effect has over time. If linear, the quotient of: (force multiplied by the displacement of or in an object) ÷ time. If rotational, the quotient of: (force multiplied by the angle of displacement) ÷ time.

(mathematics) A product of equal factors, denoted by a base raised to an exponent, representing cardinality in set theory and the probability of rejecting the null hypothesis in statistics.

(biblical, in the plural) In Christian angelology, an intermediate level of angels, ranked above archangels, but exact position varies by classification scheme.

(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.