Meaning
an adjective denoting "at, or of, midnight," is used as a noun in Mar 13:35, Luk 11:5, Act 16:25, Act 20:7.
Note: In Mat 25:6 "at midnight" translates the adjective mesos, and noun nux, "night," in the combined adverbial phrase. In Act 27:27 "about midnight" translates an adverbial phrase consisting of kata, "towards," followed by mesos, "middle" and nux, "night," with the article, lit., "towards (the) middle of the night." See MIDST.