1. noun
a) The light from the Sun, as opposed to that from any other source.
We should get home while its still daylight.
b) A light source that simulates daylight.
We had only two hours to work before daylight.
2. verb
a) To expose to daylight
The seam of coal daylighted at a cliff by the river.
b) To provide sources of natural illumination such as skylights or windows.
Wikipedia foundation.