Wiktionary
n. A dim level of illumination for romantic or similar effect.
Usage examples of "mood lighting".
I don't know how we ever changed it for all this business of fixed settings and mood lighting that reflects nothing much but the mood of the lighting-designer.
Artistic decor in hues of rich blues and greens filled the suites, while selectable colored mood lighting enhanced the feeling that guests were truly living under the sea.
He snapped on a small pole lamp, good for little more than mood lighting.
The carpet made the floor feel spongy under her feet, and the mood lighting seemed far, far too low to ever work in.
It sees some use at entryways as a magic detector, but it is more often employed in inlay work in the making of furniture for the well-to-do to provide impressive mood lighting for feasts and revels.