Source : Webster's Revised Unabridged Dictionary (1913)

Chirology \Chi*rol"o*gy\, n. [Gr. chei`r hand + -logy.]
   The art or practice of using the manual alphabet or of
   communicating thoughts by sings made by the hands and
   fingers; a substitute for spoken or written language in
   intercourse with the deaf and dumb. See {Dactylalogy}.

Source : WordNet®

chirology
     n : telling fortunes by lines on the palm of the hand [syn: {palmistry},
          {palm reading}, {chiromancy}]