In extended use: some kind of artificial light or firework. (See also senses at branch III.) Obsolete.

Apparently a name 1687–90 for a newly invented light or lighting apparatus.

slang. A light of any kind; a candle, a lantern. douse the glim (see douse, v.3).

English regional (northern). A small candle or other naked flame, used as a light by miners. Now historical.

A small light left permanently on to provide a low level of background or emergency illumination.

A window or light made of glazed panels and set into a ceiling to provide natural or artificial light.

The light present in an environment, emanating from natural or artificial sources. Also: artificial lighting designed to provide general…