Abrading

ppl. a. [f. ABRADE + -ING².] Wearing down, wasting by friction.

1830.  Lyell, Princ. Geol., I. 13. The abrading power of floods, torrents, and rivers.

1860.  Maury, Phys. Geog. Sea, i. § 55. Protected from the abrading action of its currents.