[f. ABRADE + -ER1.] That which rubs or wears down a surface.
1875. G. H. Kinahan, Valleys, etc., v. 66. If an abrader such as ice were to attack such surfaces, the weathered portion would be quickly removed and leave a flowing outline similar to that of an ice-dressed hummock.
1881. Metal World, I. 4. The file is essentially a cutting tool, not a mere abrader.
