A variant or dialectal term, possibly relating to Gaelic geography or local terminology (archaic or regional).
Possibly from Gaelic 'gae' plus 'down,' or a place-name element, though the precise etymology is uncertain and the term is obscure.
Gaedown is the kind of word that linguists puzzle over—it may be a place name, a lost dialect term, or simply a variant spelling that time forgot.
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