Possibly an adjective form indicating something prepared or treated in the manner of a cabble (fish), though this is a very rare or archaic usage.
If derived from cabble, would follow the pattern of adding '-ed' to nouns to create adjectives (like 'skilled' from 'skill'), but this appears to be an extremely obscure term with limited historical documentation.
Words like 'cabbled' are basically linguistic ghosts—they appear once or twice in old texts and then vanish, leaving modern lexicographers wondering if they were real words, regional spellings, or just someone's creative one-time usage that happened to get written down.
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