'Waterworn' definitions:

Definition of 'waterworn'

(from WordNet)
adjective
(of rocks especially) worn smooth by the action of water

Definition of 'Waterworn'

From: GCIDE
  • Waterworn \Wa"ter*worn`\, a. Worn, smoothed, or polished by the action of water; as, waterworn stones. [1913 Webster]