Main Entry: 1ges·ture
Pronunciation: \ˈjes-chər, ˈjesh-\
Function: noun
Etymology: Middle English, from Anglo-French, from Medieval Latin gestura mode of action, from Latin gestus, past participle of gerere
Date: 15th century
1 archaic : carriage, bearing
2 : a movement usually of the body or limbs that expresses or emphasizes an idea, sentiment, or attitude
3 : the use of motions of the limbs or body as a means of expression
4 : something said or done by way of formality or courtesy, as a symbol or token, or for its effect on the attitudes of others <a political gesture to draw popular support — V. L. Parrington>

cambridge on line

gesture noun (SYMBOLIC ACT)

/ˈdʒes.tʃər //-tʃɚ/ n [C]
an action that you take which expresses your feelings or intentions, although it might have little practical effect