gesticulating adj 1: making gestures while speaking; "her gesticulating hands and arms made words almost unnecessary"
Gesticulate \Ges*tic"u*late\, v. i. [imp. & p. p. {Gesticulated}; p. pr. & vb. n. {Gesticulating}.] [L. gesticulatus, p. p. of gesticulari to gesticulate, fr. gesticulus a mimic gesture, gesticulation, dim. of gestus gesture, fr. gerere, gestum, to bear, carry, peform. See {Gestic}.] To make gestures or motions, as in speaking; to use postures. --Sir T. Herbert. [1913 Webster]