What is "foulsyke"

Foulsyke is a small hamlet on the boundary between the civil parishes of Holme Abbey and Holme St. Cuthbert in Cumbria, United Kingdom. It is located just under one mile to the east of Pelutho, three-quarters of a mile south-east of Highlaws, and two-and-a-half miles south-east of Abbeytown. Other nearby settlements include Aldoth, three-quarters of a mile to the south-east, Tarns, one-and-a-half miles to the south-west, and Beckfoot, two-and-a-half miles due east as the crow flies, or four-and-a-half miles by road. Cumbria's county town, Carlisle, is located twenty-one miles away to the north-east.