an accurately measured and detailed drawing of a structure, machine, etc., or of any part of one, used as a guide to workers in constructing it.
Origin of working drawing
First recorded in 1825–35
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a scale drawing of a part or assembly that provides a guide for manufacture
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012