noun
fourth watch of the night (approx. 1am to 3am)
Archaic term from the traditional Chinese timekeeping system, dividing the night into five watches. Used in historical or literary contexts.
四更は夜の第四の刻限で、およそ午前一時から三時までを指す。
四更 is the fourth watch of the night, roughly from 1 a.m. to 3 a.m.