SKYLIGHT
skylight, fanlight
(noun) a window in a roof to admit daylight
Source: WordNet® 3.1
Etymology
Noun
skylight (plural skylights)
(architecture) A window, dome, or opening in the roof or ceiling, to admit natural light.
(physics) 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.
(volcanology) A hole in the upper part of a lava tube, yielding a view of the lava within.
Hypernyms
• light
Source: Wiktionary
Sky"light`, n.
Definition: A window placed in the roof of a building, in the ceiling of a
room, or in the deck of a ship, for the admission of light from
above.
Source: Webster’s Unabridged Dictionary 1913 Edition