Marked by or characterized by gotches (ditches or channels); or dialectally, wearing or covered with gotches (underwear).
From 'gotch' (ditch, channel, or underwear) + '-ed' suffix. The '-ed' suffix creates adjectives expressing presence or condition.
This is a wonderful example of how the same word root can create completely different meanings in different regions—in one place it describes drainage systems, in another it describes clothing.
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