body language

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

• noun The gestures, postures, and facial expressions by which a person manifests various physical, mental, or emotional states and communicates nonverbally with others.

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

• noun Nonverbal communication by means of facial expressions, eye behavior, gestures, posture, and the like; often thought to be involuntary.
• noun Deliberate, usually culturally influenced, nonverbal communication using the body through facial expressions, gestures, dance, mime, etc.

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

• noun communication via the movements or attitudes of the body