Head"stock` (?), n. Mach.
A part (usually separate from the bed or frame) for supporting some of the principal working parts of a machine
; as: (a)
The part of a lathe that holds the revolving spindle and its attachments; -- also called poppet head, the opposite corresponding part being called a tailstock.
(b)
The part of a planing machine that supports the cutter, etc.
© Webster 1913.