1. smoothed, polished, or shaped by the action of flowing or moving water
Usage: geology; often used to describe rocks and stones

Examples

• The beach was covered with waterworn pebbles that felt smooth under our feet.
• Waterworn rocks lined the riverbank after years of flowing water.
• The geologist examined the waterworn limestone formations in the canyon.
• Children collected waterworn stones from the creek bed.
• The waterworn cliffs showed evidence of ancient water levels.
• Waterworn granite boulders created natural sculptures in the stream.