noun

• (graphical user interface) A motion made with a pointing device, or on a touchscreen, that is recognised by the system as a command.
  "This Web browser can be controlled with mouse gestures."
• (obsolete) The manner of carrying the body; position of the body or limbs; posture.
  "Accubation, or lying down at meals, was a gesture used by very many nations."

verb

• (intransitive) To make a gesture or gestures.
  "My dad told me never to gesture with my hands when I talk."
• (transitive) To express (something) by a gesture or gestures.
  "He gestured his disgust."
• (transitive) To accompany or illustrate with gesture or action.
  "It is not orderly read, nor gestured as beseemeth."
• (transitive) To express or signal (to someone) by a gesture or gestures (to do something, go somewhere, etc).
  "[…] she sweepingly gestured him to the pillory — a chair upon the platform, facing the school. Here he suffered for the unusual term of an hour, with many jocular and cunning eyes constantly upon him; and, when he was released at noon, horrid shouts […]"