Synonym of boxcars (“a pair of sixes”)
Twelve o'clock at night exactly.
The middle of the night: the sixth temporal hour, equidistant between sunset and sunrise.
Utterly dark or black.
A group of twelve items.
A jury (normally composed of twelve persons).
A twelve-bore gun.
The police; law enforcement, especially a narcotics officer.
Front (front side of something, position in front of something).
The cardinal number occurring after eleven and before thirteen, represented in Arabic numerals as 12 and in Roman numerals as XII.