1585 J. Higgins tr. Junius 410/1 Lapis oprerarius... A working stone: a stone that serueth to worke withall, as the whetstone.
1706 J. Stevens i. at Abeja The Old Woman wishes her Son Bees, Sheep, a Working Stone,..and a Place in the Church.
1856 19 245/1 The diagonal position of the working stones is a decided advantage.
2010 V. J. Stone ii. 56/1 You can hold a hot stone in different ways when you use it as a working stone.