Skylight

Noun

 * 1) A window, dome, or opening in the roof or ceiling, to admit natural light.
 * 2) Diffuse sky radiation&mdash;solar radiation reaching the earth's surface after having been scattered from the direct solar beam by molecules or suspensoids in the atmosphere

Thesaurus
afterglow, air glow, bay, bay window, bow window, candescence, casement, casement window, ceiling, eaves, fan window, fanlight, flush, gleam, glint, gloss, glow, grille, housetop, incandescence, lancet window, lantern, lattice, light, louver window, luster, oriel, overhead, pane, penthouse, picture window, plafond, port, porthole, ridgepole, roof, roof garden, roof-deck, roofage, roofing, roofpole, rooftop, rooftree, rose window, sheen, shine, shingles, shininess, shining light, slates, sunset glow, tiles, top, transom, wicket, window, window bay, window glass, windowpane

Etymology
From sky: + light:.

Translations

 * Armenian:
 * Dutch: zonnedak
 * French: fenêtre de toit


 * Italian: lucernario
 * Serbian: svetlarnik
 * Spanish: