( n. )
A hollow internally threaded screw-cutting tool, made in one piece or composed of several parts, for forming screw threads on bolts, etc.; one of the separate parts which make up such a tool.
( n. )
A hollow internally threaded screw-cutting tool, made in one piece or composed of several parts, for forming screw threads on bolts, etc.; one of the separate parts which make up such a tool.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012