GLOOM, n. 1. Obscurity; partial or total darkness; thick shade; as the gloom of a forest, or the gloom of midnight.2. Cloudiness or heaviness of mind; melancholy; aspect of sorrow. We say, the mind is sunk into gloom; a gloom overspreads the mind.3. Darkness of prospect or aspect.4. Sullenness.
GLOOM, v.i. To shine obscurely or imperfectly.1. To be cloudy, dark or obscure.2. To be melancholy or dejected.
GLOOM, v.t. To obscure; to fill with gloom; to darken; to make dismal.