(geology) the mechanical process of wearing or grinding something down (as by particles washing over it)(noun)
WordNet. Princeton University. 2010.
Use "wearing away" in a sentence
"She, active and fresh-looking still, but settling into that fair largeness which is not unbecoming a lady of middle-age, he, inclined to a slight stoop, with the lines of his face more sharply defined, and the hair wearing away off his forehead up to the crown."
""The time is wearing away apace!" growled the Earl of Kent."
"A girl called Vanda Lane dies: a quiet girl, without friends, without family save for a lunatic mother wearing away her sad life in a half-world of unreality and doubt."