IPA: /ˈwɔːtəwɔːn/
KK: /ˈwɔːtərˌwɔrn/
Something that has been made smooth or polished by the movement of water over time.
The riverbank was lined with waterworn stones that glistened in the sunlight.
Waterworn is formed from "water" (from Old English *wæter*, meaning liquid that falls as rain or flows in rivers) and "worn" (from Old English *wyrnan*, meaning to wear away or erode). The word describes something that has been worn down or smoothed by the action of water.
Imagine how water can gradually 'wear away' surfaces over time, making them smooth and shaped by its flow.