n. The light from the sky when the sun is below the horizon at morning and evening.n. Hence, any faint light; partial darkness; shade.n. Figuratively, an indistinct medium of perception; also, a state of faint or hazy mental illumination.Bolonging, pertaining, or peculiar to twilight; seen by twilight; crepuscular, as a hat or moth.Faintly illuminated; shady; dim; obscure: either literally or figuratively.To illuminate faintly or dimly.