diestock

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. An apparatus for holding the dies that cut threads on screws, bolts, pipes, or rods.

Century Dictionary and Cyclopedia

1. n. A contrivance for holding the dies used in screw-cutting. It is made in various forms.

Wiktionary

1. n. A component that holds a die that cuts screw threads

GNU Webster's 1913

1. n. A stock to hold the dies used for cutting screws.

WordNet 3.0

1. n. a device that holds the dies that cut external threads on metal cylinders