skylight

Etymology
From.

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.
 * 3)  A hole in the upper part of a lava tube, yielding a view of the lava within.
 * 4) A region of flat, thin ice allowing a submarine to surface.
 * 1) A region of flat, thin ice allowing a submarine to surface.

Translations

 * Armenian:
 * Bulgarian: тавански прозорец
 * Catalan: ,
 * Chinese:
 * Mandarin:
 * Danish:
 * Dutch: ,
 * Finnish: ; kattokupu, kattovalokupu ; valoaukko
 * French:, , ,
 * Galician:, claraboia
 * German:, , Dachflächenfenster
 * Hebrew:
 * Hungarian:
 * Irish: spéirléas, forléas, fuinneog dhín
 * Italian:
 * Japanese:
 * Korean: 채광창(採光窓)
 * Norwegian:
 * Bokmål: takvindu
 * Polish:
 * Portuguese:
 * Romanian: ,
 * Russian: светово́й люк
 * Scottish Gaelic: leòsan-adhair
 * Serbo-Croatian: svetlarnik, krovni ptozor
 * Spanish:, , celaje
 * Swedish: ljusöppning, ,
 * Tagalog: luneto
 * Turkish:
 * Ugaritic: 𐎜𐎗𐎁𐎚
 * Volapük: nufalitöp
 * Welsh: ffenestr do


 * Chinese:
 * Mandarin:
 * Finnish: auringon hajasäteily
 * Portuguese:


 * Chinese:
 * Mandarin:
 * Finnish: laavatunnelin aukko
 * Portuguese: