the time of day immediately following sunset

Occurring between dusk and dawn, lasting, open, or operating through the whole night, Complete before the next morning, adverb_ During a single night, In the fore part of the night last past; in the evening before, During or for the length of the night, intransitive verb_ To spend the night, To send by mail or other courier for delivery the next day, noun_ An overnight stay, especially in a hotel or other lodging facility, Items delivered or completed overnight, Night before bedtime, referring to the night just passed

The period between sunset and sunrise, especially the hours of darkness, The period between dusk and midnight of a given day, A time or condition of gloom, obscurity, ignorance, or despair,