seaworn

sea +‎ worn. According to the Poly-Olbion project coined by Michael Drayton in 1612.

seaworn (comparative more seaworn, superlative most seaworn)

1. Smoothed or worn away gradually by the action of the sea.
   • 1612, Michael Drayton, Poly-Olbion, song 2 p. 28:

     With Waltham, and the Bere, that on the Sea-worne shore
     See at the Southerne Iles the Tides at tilt to runne;

   • 1977, Société jersiaise, Annual Bulletin (volume 22, part 1, page 43)

     Some of the larger stones are completely angular, including the tallest stone in the structure, but others, including a large capstone of peculiar shape, broken and now repaired with iron rods and molten lead, are obviously seaworn and must have been brought up the hill from sea level […]

• The Poly-Olbion project

• swear on