underlight

English

Etymology

under- +‎ light

Noun

underlight (plural underlights)

1. Illumination from underneath.
   • 1981, Burne Hogarth, Dynamic Light and Shade, page 43:

     But there are some minor underlights beneath the high arm and on the left of the face; these are reflected lights that bounce off nearby parts of the figure itself.

2. A highlight in an underlayer of a person's hair.