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