(transitive) To illuminate, to bring light to something, to brighten. / (intransitive) To show an increase in activity or a brightening of mood. / (intransitive) To light a cigarette, pipe, etc.

(transitive, nautical) To loosen, slacken, or ease off.

(intransitive, slang, dated) To go away or depart, especially in haste or without notice.

(idiomatic) To become known; to be revealed.

(Britain, idiomatic, slang) To care.

(idiomatic) To expose, disclose or reveal something that was hidden or unknown.

Alternative form of light bulb

(Ireland, idiomatic) An interjection expressing exasperation or incredulity. or to illustrate the humour in a situation.

A lamp that is suspended, for example via a cable. / (railways) A window in a train carriage that is opened by pushing it downward into the door.

(computer hardware) A pen-like device allowing a computer user to interact with the screen display.