Source : Webster's Revised Unabridged Dictionary (1913)

Opetide \Ope"tide`\, n. [Ope + tide.]
   Open time; -- applied to different things:
   (a) The early spring, or the time when flowers begin opening.
       [Archaic] --Nares.
   (b) The time between Epiphany and Ash Wednesday wherein
       marriages were formerly solemnized publicly in churches.
       [Eng.]
   (c) The time after harvest when the common fields are open to
       all kinds of stock. [Prov.Eng.] --Halliwell. [Written
       also {opentide}.]