What does gloom of the night mean?

The phrase "gloom of the night" refers to the darkness and somber atmosphere that envelops the night, often evoking feelings of sadness, mystery, or foreboding. It suggests a sense of isolation or despair that can accompany nighttime, contrasting with the brightness and clarity of day. This expression is commonly used in literature and poetry to convey emotional weight and the complexity of human experiences during the night.