/ dʒeˈstɪkjuleɪt; NAmE / verb
[ v ] to move your hands and arms about in order to attract attention or make sb understand what you are saying :
He gesticulated wildly at the clock.
► ges·ticu·la·tion / dʒeˌstɪkjuˈleɪʃn; NAmE / noun [ C , U ]:
wild / frantic gesticulations
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WORD ORIGIN
early 17th cent.: from Latin gesticulat- gesticulated, from the verb gesticulari , from gesticulus , diminutive of gestus action.