Repaired or altered (clothing); or measured by the bushel.
From 'bushel' as a verb meaning 'to repair or mend clothes' (possibly from Dutch origin), or from 'bushel' the unit of measure plus '-ed'.
Tailors would 'bushel' clothes as a side job—and the word got so associated with alteration that 'bushelman' became the term for a tailor who did fine mending and invisible repairs.
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