( n. )
In any surface prepared with indentations, perforations, or grooves, that part of the surface which is not so treated, as the level part of a millstone between the furrows, or the surface of the bore of a rifled gun between the grooves.
( n. )
In any surface prepared with indentations, perforations, or grooves, that part of the surface which is not so treated, as the level part of a millstone between the furrows, or the surface of the bore of a rifled gun between the grooves.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012