Decorated with or featuring fretwork; having intricate cut-out patterns worked through the material.
From 'fretwork' + past participle suffix '-ed', forming an adjective that describes something that has been treated or decorated with fretwork.
Past participles like 'fretworked' are perfect adjectives because they show finished states—a 'fretworked panel' is one where someone has already done the labor of cutting and carving.
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