资料来源 : pyDict

被水冲蚀的

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Waterworn \Wa"ter*worn`\, a.
   Worn, smoothed, or polished by the action of water; as,
   waterworn stones.

资料来源 : WordNet®

waterworn
     adj : (of rocks especially) worn smooth by the action of water