
1) Aged 2) Experienced 3) Weatherworn 4) Worn
Found on
https://www.crosswordclues.com/clue/weathered

1) Marked by the elements 2) Weather-beaten 3) Weatherworn 4) Worn
Found on
https://www.crosswordclues.com/clue/weathered

• (a.) Made sloping, so as to throw off water; as, a weathered cornice or window sill. • (a.) Having the surface altered in color, texture, or composition, or the edges rounded off by exposure to the elements. • (imp. & p. p.) of Weather
Found on
http://thinkexist.com/dictionary/meaning/weathered/
Weath'ered adjective 1. (Architecture) Made sloping, so as to throw off water; as, a
weathered cornice or window sill.
2. (Geol.) Having the surface altered in color, texture, or composition, or the edges rounded off by exposure to the elements.
Found on
http://www.encyclo.co.uk/webster/W/19

In architecture the term weathered describes something made sloping, so as to throw off water. For example a weathered cornice or window sill.
Found on
http://www.probertencyclopaedia.com/browse/TW.HTM

worn or damaged by nature
Found on
https://sciencetrek.org/sciencetrek/topics/soil/glossary.cfm
No exact match found.