hub Meaning, Definition & Usage

  1. noun the central part of a car wheel (or fan or propeller etc) through which the shaft or axle passes
  2. noun a center of activity or interest or commerce or transportation; a focal point around which events revolve
    • the playground is the hub of parental supervision
    • the airport is the economic hub of the area

WordNet

Hub noun
Etymology
See 1st Hob.
Definitions
  1. The central part, usually cylindrical, of a wheel; the nave. See Illust. of Axle box.
  2. The hilt of a weapon. Halliwell.
  3. A rough protuberance or projecting obstruction; as, a hub in the road. U.S. See Hubby.
  4. A goal or mark at which quoits, etc., are cast.
  5. (Diesinking) A hardened, engraved steel punch for impressing a device upon a die, used in coining, etc.
  6. A screw hob. See Hob, #3.
  7. A block for scotching a wheel.

Webster 1913