Definition of: gesticulate

(jes·tik′yə·lāt) v. ·lat·ed, ·lat·ing v.i.
To make motions with the hands or arms, as in speaking.
—v.t. To express by gestures. [<L gesticulatus, pp. of gesticulari <gesticulus, dim. of gestus bearing, gesture]
—ges·tic′u·la′tive adjective
—ges·tic′u·la′tor noun