(rail transport, UK) Permission given in an agreement allowing one railway company to run trains over certain tracks belonging to another railway company.

(gambling) The authority to charge a punter's gambling or other bills to the casino.

A type of artificial satellite that is a power station, which generates power that is beamed to consumers.

power steering

An attempt to gain authority in an oppressive or unscrupulous way.

plural of optical power

The degree to which a lens, mirror, or other optical system converges or diverges light, equal to the reciprocal of the focal length of the device.

plural of refractive power

Synonym of optical power

A form of feminism that actively attempts to challenge and overcome discrimination against women.