Skylight

//ˈskaɪˌlaɪt// noun

Definitions

Noun
  1. 1
    A window, dome, or opening in the roof or ceiling, to admit natural light.
  2. 2
    a window in a roof to admit daylight wordnet
  3. 3
    Diffuse sky radiation—solar radiation reaching the earth's surface after having been scattered from the direct solar beam by molecules or suspensoids in the atmosphere.
  4. 4
    A hole in the upper part of a lava tube, yielding a view of the lava within.
  5. 5
    A region of flat, thin ice allowing a submarine to surface.

Etymology

From sky + light.

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