|Noah Webster's Dictionary|
1. (a.) Partially dark or obscure; not luminous; dusk; as, a dusky valley.
2. (a.) Tending to blackness in color; partially black; dark-colored; not bright; as, a dusky brown.
3. (a.) Gloomy; sad; melancholy.
4. (a.) Intellectually clouded.
Dusky (1 Occurrence)
Jeremiah 13:16 Give glory to Yahweh your God, before he causes darkness, and before your feet stumble on the dark mountains, and, while you look for light, he turns it into the shadow of death, and makes it gross darkness. (See NAS)