gesture

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A motion of the limbs or body made to express or help express thought or to emphasize speech.
• noun The action of making such a motion or motions.
• noun An act or a remark made as a formality or as a sign of intention or attitude.
• intransitive verb To make gestures.
• intransitive verb To show, express, or direct by gestures.

from The Century Dictionary.

• To gesticulate; make gestures.
• To accompany or enforce with gesture or action.
• noun Movement of the body or limbs; carriage of the person.
• noun A motion of the head, body, or limbs expressive of thought, sentiment, or passion; any action or posture intended to express a thought or a feeling, or to emphasize or illustrate what is said.
• noun Bearing; behavior, in a general sense.
• noun Synonyms Gesture, Gesticulation. These words may have the same meaning, but gesture is more common to represent the thing, while gesticulation generally represents the act, and especially vigorous, varied, and rapid action: as, rapid and abundant gesticulation; a slight gesture of impatience.

from the GNU version of the Collaborative International Dictionary of English.

• noun obsolete Manner of carrying the body; position of the body or limbs; posture.
• noun A motion of the body or limbs expressive of sentiment or passion; any action or posture intended to express an idea or a passion, or to enforce or emphasize an argument, assertion, or opinion.
• transitive verb To accompany or illustrate with gesture or action; to gesticulate.
• intransitive verb To make gestures; to gesticulate.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A motion of the limbs or body, especially one made to emphasize speech.
• noun An act or a remark made as a formality or as a sign of attitude.
• verb intransitive To make a gesture or gestures.
• verb transitive To express something by a gesture or gestures.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• verb show, express or direct through movement
• noun something done as an indication of intention
• noun the use of movements (especially of the hands) to communicate familiar or prearranged signals
• noun motion of hands or body to emphasize or help to express a thought or feeling