Pivot

1. Hence, figuratively: A turning point or condition; that on which important results depend; as, the pivot of an enterprise.
2. A fixed pin or short axis, on the end of which a wheel or other body turns.
3. To place on a pivot.
4. The officer or soldier who simply turns in his place whike the company or line moves around him in wheeling; -- called also pivot man.
5. The end of a shaft or arbor which rests and turns in a support; as, the pivot of an arbor in a watch.