Meaning

noun motion of hands or body to emphasize or help to express a thought or feeling

noun the use of movements (especially of the hands) to communicate familiar or prearranged signals

noun something done as an indication of intention

originFrom Medieval Latin gestūra (“a mode of action”), from Latin gerō (“to bear; (reflexive) bear oneself, behave, act”), past participle gestus. By surface analysis, Latin gest- + -ure.

Etymology from Wiktionary, CC BY-SA 3.0