A box containing a source of light and a white, translucent cover, used to view photographic transparencies.

Something incredibly fast (now mainly used in comparison: like or faster than greased lightning).

simple past tense and past participle of lighten

present participle of lighten

The act or result of making something light or lighter. / (medicine) The sensation caused by the descent of the uterus into the pelvic cavity before the onset of labour

(obsolete or proscribed) Alternative form of lightning

A short-lived glowing ball sometimes observed to float in the air and thought to consist of ionized gas associated with thunderstorms.

plural of lightning detector

plural of lightning conductor

plural of lightbulb