Source : Webster's Revised Unabridged Dictionary (1913)

Bole \Bole\, n. [Gr. ? a clod or lump of earth: cf. F. bol, and
   also L. bolus morsel. Cf. {Bolus}.]
   1. Any one of several varieties of friable earthy clay,
      usually colored more or less strongly red by oxide of
      iron, and used to color and adulterate various substances.
      It was formerly used in medicine. It is composed
      essentially of hydrous silicates of alumina, or more
      rarely of magnesia. See {Clay}, and {Terra alba}.

   2. A bolus; a dose. --Coleridge.

   {Armenian bole}. See under {Armenian}.

   {Bole Armoniac}, or {Armoniak}, Armenian bole. [Obs.]
      --Chaucer.