gesticulation

noun3

1. •
   The act of gesticulating, or making gestures to aid expression of thoughts, sentiments or passion.
2. •
   A gesture; a motion of the body or limbs when speaking, or in representing action or passion, and enforcing arguments and sentiments.

   • In the eagerness of his gesticulations, first he knocked off my hat, then he knocked off Lessingham’s, then his own, then all three together […] — 1897
3. •
   (old-fashioned) An odd or fanciful motion.