Part of speech:
(Idiomatic) Middle of the night.
The period of actual darkness after sunset and before sunrise; also, a part of this period before bedtime [a night at the opera] or the part between bedtime and morning [a sleepless night]
Lasting throughout the whole night.
Find another word for midnight. In this page you can discover 8 synonyms, antonyms, idiomatic expressions, and related words for midnight, like: stroke of midnight, dead-of-night, 12:00 P.M., noon-of-night, witching-hour, night, all-night and nightlong.