Hub

1.

(The center part of a wheel, etc., center of interest or activity) hub of the wheel ដុំ (កង់រទេះ)
Example: Phnom Penh commercial is a hub of industry.hub of activity មជ្ឈមណ្ឌល

1.

The central part, usually cylindrical, of a wheel; the nave.

2.

The hilt of a weapon.

3.

A rough protuberance or projecting obstruction; as, a hub in the road.

4.

A goal or mark at which quoits, etc., are cast.

5.

A hardened, engraved steel punch for impressing a device upon a die, used in coining, etc.

6.

A screw hob.

7.

A block for scotching a wheel.