(sometimes figuratively) The power that enables something to move. / (rail transport, collectively) The locomotives that operate on a railway.

(physics) The ratio of the power produced by an object to its mass.

A station built for the production of electric power; a power station. / The portion of a vehicle devoted to providing energy for motion; the engine or motor.

(set theory, of a set S) The set whose elements comprise all the subsets of S (including the empty set and S itself).

A short sleep taken in the daytime in order to refresh a person and generally terminated before deep sleep begins so as not to leave the sleeper drowsy.

A conservative style of business dress that gives an impression of confidence and efficiency and was used especially by women in the 1970s and 1980s to succeed in a male-dominated business world.

A working lunch at which important discussions may be held, and important decisions made.

(colloquial) Children's ability to make their parents buy something or do something for them by continually asking until the parents agree to do it.

Having unlimited power; omnipotent.

Alternative spelling of candlepower