noun
1. : a method of communicating by means of systematic conventionalized chiefly manual gestures used by the deaf or by people speaking different languages
sign language of the American Plains Indians
2. : dactylology
noun
1. : a method of communicating by means of systematic conventionalized chiefly manual gestures used by the deaf or by people speaking different languages
sign language of the American Plains Indians
2. : dactylology
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012