Midnight

n.	1.	The middle of the night; twelve o'clock at night. The iron tongue of midnight hath told twelve. - Shak.
a.	1.	Being in, or characteristic of, the middle of the night; as, midnight studies; midnight gloom.

Noun

1.

midnight - 12 o'clock at night; the middle of the night; "young children should not be allowed to stay up until midnight"

all-night, atramentous, black, black as coal, black as ebony, black as ink, black as midnight, black as night, coal-black, coaly, dark, dark as night, dark as pitch, dead of night, deep black, ebony, hush of night, ink-black, inky, jetty, night, night-black, night-dark, night-fallen, nightlong, nightly, nighttime, nigrous, nocturnal, noonday night, pitch-black, pitch-dark, pitchy, raven, raven-black, sable, sloe, sloe-black, sloe-colored, tar-black, tarry