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rubbing-stone

ˈrubbing-stone
  [rubbing vbl. n. 5 a.]
  A stone used for rubbing, in order to sharpen or smooth something. Cf. rubstone.

1648 Hexham ii, Een Wrijf-steen, a Rubbing-stone. 1657 S. Purchas Pol. Flying-Ins. 59 A peece of a rubbing stone, such as Mowers use to whet their sithes withall. 1703 Moxon Mech. Exerc. 240 Rubbing them on a rubbing Stone with sharp Sand. 1823 P. Nicholson Pract. Build. 389 The headers and stretchers in returns, which are not axed, are likewise dressed upon the rubbing-stone. 1842 Gwilt Encycl. Arch. §1890 After the bricks for the guaged work have been rough-shaped by the axe, they are rubbed smooth on the rubbing stone.

Oxford English Dictionary

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