Source : Webster's Revised Unabridged Dictionary (1913)

Alectryomancy \A*lec"try*o*man`cy\, n. [Gr. ? cock + -mancy.]
   Divination by means of a cock and grains of corn placed on
   the letters of the alphabet, the letters being put together
   in the order in which the grains were eaten. --Amer. Cyc.