hag
HAG
A soft, wet section of a peat bog — a place where the surface has broken through and the dark water beneath is exposed. Also, in moorland dialect, the overhanging edge of an eroded peat bank. Walking on hag ground is an exercise in distrust of every surface.
Etymology
Possibly from Old Norse högg (a gap, a cutting) or Old English haga (enclosure). In peat-bog usage, the word refers to the cut or broken face of the bog.
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