ETYM Old Eng. dee, die, French dé, from Latin datus given, thrown, p. p. of dare to give, throw. Related to Date a point of time.
(Homonym: dye).
1. A device used for shaping metal.
2. A tool that is fitted into a diestock and used for cutting male (external) screw threads on screws or bolts or pipes or rods.

screw-tap

1. A light touch or stroke; SYN. pat, dab.
2. A plug for a bunghole in a cask; SYN. spigot.
3. A small metal plate that attaches to the toe or heel of a shoe (as in tap dancing).
4. A tool for cutting female (internal) screw threads.