A position of the body or of body parts: a sitting posture. An attitude; a pose: assumed a posture of angry defiance. A characteristic way of bearing one's body; carriage: stood with good posture. Relative placement or arrangement: the posture of the buildings on the land. A stance or disposition with regard to something: "Those bases are essential to our military posture in the Middle East\u201d ( Gerard Smith). A frame of mind affecting one's thoughts or behavior; an overall attitude. To assume an exaggerated or unnatural pose or mental attitude; attitudinize. To assume a pose. To put into a specific posture; pose.