center
n. countablen. the middle part of something. It can also mean a building or place where people go for a specific activity, like a sports center.
n. the point that is equally distant from every part of the circumference of a circle or sphere; more broadly, a facility providing a particular service or activity.
The table stands in the center of the room.
The new community center offers free classes for adults every weekend during the summer.
By placing the fountain at the exact center of the courtyard, the architect created a focal point that draws the eye from every entrance.
Commonly used with 'of' to indicate the middle of an area or object.
The center of the city is very crowded. (in British English)The centre of the city is very crowded.'Center' is the standard American spelling, while 'centre' is used in British English and most other varieties.