say it: WETH-urd
weathered is an adjective meaning "worn by exposure to the weather". It carries one recorded sense.
worn by exposure to the weather
“a house of weathered shingles”
Forms marked are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for weathered come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.