[{"Bold_text": "verb (used without object)", "List Items": ["(of a moving agent, as running water, wind, or a glacier) to erode by the abrasion of materials carried along.", "to disintegrate as a result of corrasion ,as the rock underlying the brink of a waterfall."]}, {"Bold_text": "verb (used with object)", "List Items": ["to wear down by corrasion ;abrade."]}]