waterworn

[ waw-ter-wawrn, -wohrn, wot-er- ]

/ ˈwɔ tərˌwɔrn, -ˌwoʊrn, ˈwɒt ər- /

worn by the action of water; smoothed by the force or movement of water.

Origin of waterworn

First recorded in 1805–15; water + worn

It consisted of a yellow sandstone in thin strata, covered in some parts with beds of waterworn pebbles.

Journal of an Expedition into the Interior of Tropical Australia |Thomas Mitchell
The bed of the river is gravelly, or composed of waterworn stones, which diminish in size as you recede from the mountains.

Early Western Travels 1748-1846, Volume XVI |Various
Seaside and river gravel, which is composed usually of rounded, waterworn pebbles, is unfit for surfacing roads.

The Future of Road-making in America |Archer Butler Hulbert
Swallow-holes or waterworn caverns are common in many parts of the limestone region.

Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 2 |Various

The specimen was found on a waterworn surface of the beach, partially covered by shingle….

The Appendages, Anatomy, and Relationships of Trilobites |Percy Edward Raymond

waterworn

/ (ˈwɔːtəˌwɔːn) /

worn smooth by the action or passage of water