hub

The central part, usually cylindrical, of a wheel; the nave.
A point where many routes meet and traffic is distributed, dispensed, or diverted.
A central facility providing a range of related services, such as a medical hub or an educational hub.
A computer networking device connecting several Ethernet ports. See switch.
A stake with a nail in it, used to mark a temporary point.
A male weasel; a buck; a dog; a jack.
A rough protuberance or projecting obstruction.
An area in a video game from which individual levels are accessed.
A goal or mark at which quoits, etc., are thrown.
A hardened, engraved steel punch for impressing a device upon a die, used in coining, etc.
A screw hob.
A block for scotching a wheel.