the world > time > day and night > night > [noun] > darkest period or dead of night (2)
dead of night1548
= Dead period, season, or stage. dead of night, dead of winter: the time of intensest stillness, darkness, cold, etc.; = ‘depth’ (of winter). †dead of…
witching hour1762
Usually with the. Midnight, with reference to the belief that witches are active and supernatural occurrences take place at that time. More…