Definition of gloom

• n. - Partial or total darkness; thick shade; obscurity; as, the gloom of a forest, or of midnight.
• n. - A shady, gloomy, or dark place or grove.
• n. - Cloudiness or heaviness of mind; melancholy; aspect of sorrow; low spirits; dullness.
• n. - In gunpowder manufacture, the drying oven.
• v. i. - To shine or appear obscurely or imperfectly; to glimmer.
• v. i. - To become dark or dim; to be or appear dismal, gloomy, or sad; to come to the evening twilight.
• v. t. - To render gloomy or dark; to obscure; to darken.
• v. t. - To fill with gloom; to make sad, dismal, or sullen.