Shaped like or resembling a chubb fish, or having a thick, rounded body structure.
From chubb with the past participle suffix -ed, used descriptively to characterize objects or people with chubby proportions.
In Renaissance fishing literature, 'chubbed' appears as a way to describe thick-bodied fish of questionable quality—the word carried a faint judgment that meaty wasn't always desirable in the fish world.
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