Mandrel \Man"drel\, n. [F. mandrin, prob. through (assumed) LL.
mamphurinum, fr. L. mamphur a bow drill.] (Mach.)
(a) A bar of metal inserted in the work to shape it, or to
hold it, as in a lathe, during the process of
manufacture; an arbor.
(b) The live spindle of a turning lathe; the revolving arbor
of a circular saw. It is usually driven by a pulley.
[Written also {manderil} and {mandril}.]
[1913 Webster]
{Mandrel lathe}, a lathe with a stout spindle, adapted esp.
for chucking, as for forming hollow articles by turning or
spinning.
[1913 Webster]