The Collaborative International Dictionary of English v.0.48:
Weatherworn \Weath"er*worn`\, a. Worn by the action of, or by exposure to, the weather. [1913 Webster]WordNet (r) 3.0 (2006):
weatherworn adj 1: worn by exposure to the weather; "a house of weathered shingles" [syn: weather-beaten, weatherworn, weathered]