A bright blue flare prepared from nitre, sulphur, and the black sulphide of antimony; formerly used in signalling, but now chiefly as fireworks.

(figuratively) A way of presenting or perceiving something such that it appears more favourably than by an alternative presentation or perception.

The soft, greyish light characteristic of dawn or dusk

(meteorology, nautical) A light wind with wind speed between 0.3 and 1.5 m/s; a Force 1 wind strength on the Beaufort scale.

(simile) extremely light, having minimal weight

plural of light rail

(US, Canada, rail transport) A kind of passenger railway in urban and suburban settings typically characterized by a mixture of tram (or in North America streetcar) and metro features, crossing streets at grade crossings and normally powered by electricity.

(idiomatic) An acclaimed expert, one of the foremost experts, a luminary. / (nautical, navigation) A light that helps to guide vessels into a port.

(Australia) A light bulb. / A nearly evacuated glass globe containing ionized gas (plasma), which produces lightning-like patterns when touched.

An evacuated glass bulb containing a metal filament which is heated by electrical resistance to produce light.