central part
nounUK /ˈsɛntrəl pɑːt/
US /ˈsɛntrəl pɑːrt/
The middle piece of something.
The central part of the apple has the seeds.
OTHER MEANINGS
2. The most important or main section of something.
The central part of the story is the hero's journey.
3. The area in the middle of a place or region.
They live in the central part of the city.
4. A key component that holds other parts together.
The central part of the machine is the motor.