Source : Webster's Revised Unabridged Dictionary (1913)

Potation \Po*ta"tion\, n. [L. potatio, fr. potare. See
   {Potable}.]
   1. The act of drinking. --Jer. Taylor.

   2. A draught. ``Potations pottle deep.'' --Shak.

   3. Drink; beverage. ``Thin potations.'' --Shak.

Source : WordNet®

potation
     n 1: a serving of drink (usually alcoholic) drawn from a keg;
          "they served beer on draft" [syn: {draft}, {draught}, {tipple}]
     2: the act of drinking (especially an alcoholic drink)