Dim-scúa

According to the Old English Dictionary:

an;

dim-scúa

m. [scúwa, scúa a shade, shadow] Dimness, darkness; tenēbræ :-- Oft hira mód onwód under dimscúan deófles lárum their mind often went under darkness by the devil's lore, Andr. Kmbl. 281; An. 141. dim-scua