Wiktionary
BACKLIGHT, noun. A spotlight that illuminates a photographic subject from behind.
BACKLIGHT, noun. A light attached to an LCD display.
BACKLIGHT, noun. The rear window of a motor car.
BACKLIGHT, verb. To illuminate something from behind.
Wise words
To use the same words is not a sufficient guarantee of
understanding; one must use the same words for the same
genus of inward experience; ultimately one must have one's
experiences in common.
