hob

hob

¹

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

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hob

²

1. a hobgoblin or elf

2. a male ferret

Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

hob

[häb]

(design engineering)

A master model made from hardened steel which is used to press the shape of a plastics mold into a block of soft steel.

(mechanical engineering)

A rotary cutting tool with its teeth arranged along a helical thread; used for generating gear teeth.

McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

hob

A flat projecting shelf at the side of a fireplace where pots or pans may be placed to keep warm.

McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.