Pronunciation: (wīnd'up"),[key] —n. 1. the conclusion of any action, activity, etc.; the end or close.
2. a final act or part.
3. Baseball.the preparatory movements of the arm before pitching a ball. Cf. stretch (def. 22).
4. Informal.a mechanical object, as a toy or wristwatch, that is driven by a spring or similar mechanism that must be wound.
5. an act or instance of winding up. Also,wind'-up."