noun

• (rare) The position of someone or something relative to another; position; situation.
  "1661, Thomas Salusbury (translator), Galileo's Dialogue Concerning the Two Chief Systems of the World The Moon beheld in any posture, in respect of the Sun and us, sheweth us its superficies ... always equally clear."

verb

• (intransitive) to put one's body into a posture or series of postures, especially hoping that one will be noticed and admired
  "If you're finished posturing in front of the mirror, can I use the bathroom now?"
• (intransitive) to pretend to have an opinion or a conviction
  "The politicians couldn't really care less about the issue: they're just posturing for the media."
• (transitive) To place in a particular position or attitude; to pose.
  "to posture oneself; to posture a model"