The middle of the night: the sixth temporal hour, equidistant between sunset and sunrise.
Twelve o'clock at night exactly.
Synonym of boxcars (“a pair of sixes”)
Utterly dark or black.
A device for telling the time at night, rather like a sundial but read according to the stars.
A person or creature that is active at night.
Taking place at night, nightly.
Primarily active during the night.