1. to make gestures, especially animated ones, while speaking

Examples

• The professor gesticulated wildly as he explained the complex theory.
• She gesticulated with her hands to help describe the size of the fish.
• Unable to speak the language, he gesticulated to ask for directions.
• The conductor gesticulated dramatically to guide the orchestra.
• When excited, she tends to gesticulate more than usual.
• He gesticulated frantically, trying to get their attention from across the street.