Hub (?), n. [See 1st Hob.]
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.
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. [Colloq.]