hob(redirected from play hob)
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1. a steel pattern used in forming a mould or die in cold metal
2. a hard steel rotating cutting tool used in machines for cutting gears
1. a hobgoblin or elf
2. a male ferret
A master model made from hardened steel which is used to press the shape of a plastics mold into a block of soft steel.
A rotary cutting tool with its teeth arranged along a helical thread; used for generating gear teeth.
A flat projecting shelf at the side of a fireplace where pots or pans may be placed to keep warm.