Þeóstrung
Bosworth & Toller Anglo-Saxon Old English Dictionary - þeóstrung
According to the Old English Dictionary:
þýstrung, e;
- þeóstrung
- f. Darkness, gloom, obscurity :-- Hí on ðære þýstrunge hine swencton, Guthl. 5; Gdwin. 36, 14. Næhtes [ðió]strung noctis caliginem, Rtl. 182, 35. þeostrung