plural of light year

Disordered in the head; dizzy or feeling faint; hence, flighty in mind; delirious. / Thoughtless; volatile; frivolous.

plural of light source

A light exhibiting very rapid regular alternations of light and darkness, normally sixty flashes per minute.

(nautical) A rhythmic light (in a lighthouse) in which all durations of light and darkness are equal.

A light in which the total duration of light in each period is clearly longer than the total duration of darkness and in which the intervals of darkness (occultations) are all of equal duration.

Alternative spelling of streetlight

plural of light roller

plural of light sail

(astronautics) A solar sail.