Definition of hob

• n. - The hub of a wheel. See Hub.
• n. - The flat projection or iron shelf at the side of a fire grate, where things are put to be kept warm.
• n. - A threaded and fluted hardened steel cutter, resembling a tap, used in a lathe for forming the teeth of screw chasers, worm wheels, etc.
• n. - A fairy; a sprite; an elf.
• n. - A countryman; a rustic; a clown.