[ bak-lahyt ]
/ ˈbækˌlaɪt /
Movies, Television. a light source placed behind an actor, object, or scene to create a highlight that separates the subject from the background.
verb (used with object), back·light·ed or back·lit, back·light·ing.
to illuminate (something) from behind.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for backlight
Willis's taxi ran on past the other, and through the backlight the inspector saw Archer alight and pass into the hotel.The Pit Prop Syndicate|Freeman Wills Crofts