Heort-scræf

According to the Old English Dictionary:

es;

heort-scræf

n. The heart-cavern, the heart with its dark recesses :-- Ne þǽr ówiht inne ne belífe on heortscræfe heánna gylta nec lateat quidquam culparum cordis in antro, Dóm. L. 39. heort-scræf