the act of adjusting or aligning the parts of a device in relation to each other | the center around which something rotates |
the spatial property possessed by an arrangement or position of things in a straight line or in parallel lines | the 2nd cervical vertebra; serves as a pivot for turning the head |
(astronomy) apparent meeting or passing of two or more celestial bodies in the same degree of the zodiac | a straight line through a body or figure that satisfies certain conditions |
an organization of people (or countries) involved in a pact or treaty | a group of countries in special alliance |
| the main stem or central part about which plant organs or plant parts such as branches are arranged |