Dark; tending to darkness; dusky; shaded, either as to light or color; shadowy; swarthy.n. Partial darkness; an obscuring of light, especially of the light of day; a state between light and darkness; twilight: as, the dusk of the evening; the dusk of a dense forest.n. Tendency to darkness of color; swarthiness.To make dusky or dark; obscure; make less luminous.To make dim.To grow dark; begin to lose light, brightness, or whiteness.To cause a dusky appearance; produce a slightly ruffled or shadowed surface.