Definition of "centre of gravity" []

• A point, near or within a body, through which its weight can be assumed to act when considering forces on the body and its motion under gravity. This coincides with the centre of mass in a uniform gravitational field (noun)
• Any pivotal or central idea or group. (noun)

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• "About this star, or at all events in the centre of gravity common to all the globes of the Milky Way and supposed to be near Alcyone in the Pleiades, every one of these globes was declared to be revolving, our own performing the circuit in a period of 117,000,000 of years!"
• "A thorough belief in and an unlimited admiration of himself form the centre of gravity upon which the other qualities of Kalkbrenner's character balance themselves."
• "Once down, it seemed the safe and prudent thing to do to keep my centre of gravity as low as possible by staying there, and I made it to the top of the stairs by jack-knifing upwards on the seat of my pants and the soles of my shoes."