ppl. a. (UN-1 8.)
1827. Faraday, Chem. Manip., iii. (1842), 72. The learner should practise first on a piece of waste glass tube, commencing both from an unabraded surface and from a cross line.
1886. Athenæum, 18 Dec., 830/1. In an area of about forty feet square were found nearly six hundred unabraded worked flints.
