manual alphabet definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a system of communication, esp. one for deaf persons, in which positions of the fingers indicate the letters of the alphabet
manual alphabet definition by American Heritage Dictionary
An alphabet used for communication by hearing-impaired people in which finger positions represent the letters.