Other forms: skylights
A skylight is a window set into a roof. Fit a skylight, light from the skylight, the skylight leaked.
It gives several times the light of a wall window of the same size, because it faces the whole sky rather than part of it. The trade-off is heat: the same opening loses warmth in winter and gains too much in summer. Flashing is where they leak.
1nounskylightA window set into a roof.
“Rain drummed on the skylight above the kitchen table.”
skylight is a window.
Sky plus light. The compound is recorded from the seventeenth century.
From sky + light.
Etymology from Wiktionary, CC BY-SA