Dusk, n.
1. Imperfect obscurity; a middle degree between light and darkness; twilight; as, the dusk of the evening.
2. A darkish color. Whose duck set off the whiteness of the skin. Dryden.
3 other Webster entries under this spelling
Dusk, a.
Tending to darkness or blackness; moderately dark or black; dusky. A pathless desert, dusk with horrid shades. Milton.
Dusk, v. t.
To make dusk. [Archaic] After the sun is up, that shadow which dusketh the light of the moon must needs be under the earth. Holland.
Dusk, v. i.
To grow dusk. [R.] Chaucer.
Shades of meaning
Fernald lists dusk only as an antonym, under light.
He lists it without comment; the entries above explain its neighbors.
Synonyms
none given