A language that uses a system of manual, facial, and other body movements as the means of communication, especially among deaf people.
A method of communication, as between speakers of different languages, that uses hand movements and other gestures.
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.