ETYM Cf. French crépusculaire.
Of or pertaining to twilight.
Like twilight; dim.
Pertaining to twilight; appearing or active at twilight.

ETYM Old Eng. dusc, dosc, deosc; cf. dial. Swed. duska to drizzle, dusk a slight shower.
Tending to darkness or blackness; moderately dark or black; dusky.

Lighted by or as if by twilight