HUB

hub|hob. Hub, or Hob, n. the nave of a wheel

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Hub (?), n. [[See 1st Hob.]] 1. 1. The central part, usually cylindrical, of a wheel; the nave. See Illust. of Axle box.
2. 2. The hilt of a weapon. Halliwell.
3. 3. A rough protuberance or projecting obstruction; as, a hub in the road. See Hubby.
4. 4. A goal or mark at which quoits, etc., are cast.
5. 5. (Diesinking) A hardened, engraved steel punch for impressing a device upon a die, used in coining, etc.
6. 6. A screw hob. See Hob, 3.
7. 7. A block for scotching a wheel.
Hub plank (Highway Bridges), a horizontal guard plank along a truss at the height of a wagon-wheel hub. — Up to the hub, as far as possible in embarrassment or difficulty, or in business, like a wheel sunk in mire; deeply involved.