A work of art relating or dedicated to the night. / (music) A dreamlike or pensive composition, usually for the piano.

plural of nocturne

The condition or habit of being active at night.

plural of nocturn

(Christianity) The night office of the Christian liturgy of the Hours, such as is performed in monasteries. / (Christianity) A portion of the psalter used during nocturns.

A person or creature that is active at night. / (historical) A device for telling the time at night, rather like a sundial but read according to the stars.

(of a person, creature, group, or species) Primarily active during the night. / (of an occurrence) Taking place at night, nightly.

During the night / Every night.

plural of nocturnality

plural of nocturnal