Gloom (glo͞om), n. [AS. glōm twilight, from the root of E. glow. See Glow, and cf. Glum, Gloam.]
1. Partial or total darkness; thick shade; obscurity; as, the gloom of a forest, or of midnight.
2. A shady, gloomy, or dark place or grove.
Before a gloom of stubborn-shafted oaks. Tennyson.
3. Cloudiness or heaviness of mind; melancholy; aspect of sorrow; low spirits; dullness.
A sullen gloom and furious disorder prevailed by fits. Burke.
4. In gunpowder manufacture, the drying oven.
Syn. — Darkness; dimness; obscurity; heaviness; dullness; depression; melancholy; dejection; sadness. See Darkness.