Source : Webster's Revised Unabridged Dictionary (1913)

Benison \Ben"i*son\, n. [OE. beneysun, benesoun, OF.
   bene["i]?un, bene["i]son, fr. L. benedictio, fr. benedicere
   to bless; bene (adv. of bonus good) + dicere to say. See
   {Bounty}, and {Diction}, and cf. {Benediction}.]
   Blessing; beatitude; benediction. --Shak.

         More precious than the benison of friends. --Talfourd.

Source : WordNet®

benison
     n : a spoken blessing