This is earth from a spot where three land boundaries (ooir ny tree cagleeyn) meet which was sprinkled on a person afflicted with the evil eye. It was considered one of the best of remedies.
The earth from cross-four-ways or from any spot where numbers of people were passing was also considered very good.
I saw a spot at Dalby where three boundaries meet and so much earth had been taken out that a small pit had been made!
(source: Wm. Cashen’s Manx Folklore (1912); photo wallpaper)