Noun

• S: (n) gesture (motion of hands or body to emphasize or help to express a thought or feeling)
• S: (n) gesture, motion (the use of movements (especially of the hands) to communicate familiar or prearranged signals)
• S: (n) gesture (something done as an indication of intention) "a political gesture"; "a gesture of defiance"

Verb

• S: (v) gesticulate, gesture, motion (show, express or direct through movement) "He gestured his desire to leave"