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