noun
: an adjustable screw-thread die that is made of a hollow cylinder cut away at one end and leaving prongs that are provided with cutting teeth on the inside and are taper-threaded on the outside
noun
: an adjustable screw-thread die that is made of a hollow cylinder cut away at one end and leaving prongs that are provided with cutting teeth on the inside and are taper-threaded on the outside
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012