Source : Webster's Revised Unabridged Dictionary (1913)

Ana \A"na\ ([=a]"n[.a]), adv. [Gr. 'ana` (used distributively).]
   (Med.)
   Of each; an equal quantity; as, wine and honey, ana (or,
   contracted, aa), ? ij., that is, of wine and honey, each, two
   ounces.

         An apothecary with a . . . long bill of anas. --Dryden.

Source : WordNet®

Ana
     n 1: mother of the ancient Irish gods; sometimes identified with
          Danu
     2: a collection of anecdotes about a person or place