D defs.my
Entry 1 sense Webster, 1913

Dactylology

· Dac·tyl·ol·o·gy · IPA /ˌdæktəlˈɑləd͡ʒi/
01 n. The art of communicating ideas by certain movements and positions of the fingers; a form of sign language, especially the manual alphabets …
  1. 1.
    The art of communicating ideas by certain movements and positions of the fingers; a form of sign language, especially the manual alphabets used by the deaf and dumb.