The Collaborative International Dictionary
Waterworn \Wa"ter*worn`\, a. Worn, smoothed, or polished by the action of water; as, waterworn stones.
Wiktionary
a. worn or smoothed by the action of water.
WordNet
adj. (of rocks especially) worn smooth by the action of water
Usage examples of "waterworn".
A turn to the right at a waterworn column and a crawl through a chimney almost too small to let her pass led her to the last rocky stretch before the exit.
Lightning rippled across the eastern sky, showing a waterworn step and an odd, gargoyle-faced doorknocker.
Some of them were painted, some just scratchings on the surface of the outcrops, the best of them in what looked like waterworn caverns.
The seaward face of the Cape was rocky and waterworn along the shoreline.
The room was like a hardened shell with ancient, waterworn ribs of teakwood.
There were veined agates, waterworn and smooth as swallows eggs, stones of soft blue with lines of red through them, or pink or yellow, and Jaspers and carnelians in a hundred shades of burgundy, shiny black onyx and tiger's eyes of gold barred with iridescent waves of shifting colour.
For the moment, he could sense nothing of the innocuous waterworn pebble he'd dipped into his particular host of sorceries, so he had little choice but to fashion his search into an outward spiral, trusting in proximity to brush his senses sooner or later.