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[′hed ‚stäk]
(mechanical engineering)
The device on a lathe for carrying the revolving spindle.
The movable head of certain measuring machines.
The device on a cylindrical grinding machine for rotating the work.
Also known as workhead.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

headstock

A supporting beam for a church bell.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.