> a movement of part of the body, especially a hand or the head, to express an idea or meaning Dictionary meaning of gesture. > Sign languages (also known as

> a movement of part of the body, especially a hand or the head, to express an idea or meaning Dictionary meaning of gesture. > Sign languages (also known as signed languages) are languages that use the *visual-manual modality to convey meaning* From the introduction to the wikipedia article. Sign language is definitely made of gestures, at least by my understood definition of the word gesture.