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1. To become eroded, dissolved, or stripped away from exposure to some destructive element or force. The enamel on your teeth has worn almost completely away, which is why you've been experiencing so much pain when you eat and drink. Over the course of several centuries, the coastline wore away until the small village was completely consumed by the sea.
2. To erode, dissolve, or strip away something as a result of exposure to some destructive element or force. A noun or pronoun can be used between "wear" and "away." The extreme weather in this area will wear that cheap paint away in a matter of weeks. Rust has completely worn away the underside of the car.
wear something away
to erode something. The constant rains wore the side of the cathedral away. The flooding wore away the topsail.
1. To erode or consume something by long or hard use, attrition, or exposure: The sea is wearing away the rocks. Repeated washings have worn the fabric away. The tough climate wears away at the roof.
2. To be gradually eroded or consumed by long or hard use, attrition, or exposure: The paint on the house is wearing away.