1. Even as they grew, erosion was wearing away these Mesozoic Era volcanoes. 2. That involves wearing away the metal to reduce the main thickness of the blade. 3. During the life of the engine, the piston had been slowly wearing away . 4. It consists of wearing away some of the metal to form an acute angle on the cutting edge. 5. No one knows how glucosamine sulfate might prevent the cartilage that lines and cushions joints from wearing away . 6. "Bank erosion " is the wearing away of the banks of a stream or river. 7. We had pretty much determined that it was a wearing away where the bones came together in the right knee. 8. "' Bank erosion "'is the wearing away of the banks of a stream or river. 9. The erosion of the Watergate-era reform laws has been a gradual process, like water wearing away a rock. 10. Yet although most of the " Friday " team returns, attrition is slowly wearing away at the series.