center of gravity
nounUK /ˌsentər əv ˈɡrævəti/
US /ˌsentər əv ˈɡrævəti/
The point in an object where its weight is balanced, like the middle spot where it can stay steady.
The center of gravity of a ruler is right in the middle, so it balances on your finger there.
OTHER MEANINGS
2. The most important or central part of something.
The center of gravity of the debate was the new school budget.
3. A person or thing that attracts the most attention or interest.
The star player was the center of gravity at the party.
4. In physics, the point where the total gravitational force on a body acts.
Engineers calculated the center of gravity to keep the rocket stable.