Alternative letter-case form of northern lights

(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

The soft, greyish light characteristic of dawn or dusk

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.

plural of leading light

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

(idiomatic, religious) To undergo a spiritual conversion. / (idiomatic) To gain an understanding of something previously not understood, especially in a sudden insight.

(astronomy) A phenomenon caused by light reflected off surfaces distant from the source, and arriving at the observer with a delay relative to this distance, analogous to an echo of sound.