Dactylology
(n.) The art of communicating ideas by certain movements and positions of the fingers; -- a method of conversing practiced by the deaf and dumb.
Similar Words:
Acrodactylum Adactyl Adactylous Anisodactyla Anisodactylous Anisodactyls Artiodactyla Artiodactyle Artiodactylous Dactyl