( v. )
A perforated board, block of plaster, hardened sand, etc., in which a pattern is partly imbedded when a mold is made, for giving shape to the surfaces of separation between the parts of the mold.
( v. )
A perforated board, block of plaster, hardened sand, etc., in which a pattern is partly imbedded when a mold is made, for giving shape to the surfaces of separation between the parts of the mold.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012