Gást-cófa

According to the Old English Dictionary:

an;

gást-cófa

m. The spirit's chamber, breast; anĭmi cŭbīle, pectus :-- Hí habbaþ in gástcófan grimme geþohtas they have fierce thoughts in their breast, Frag. Kmbl. 22; Leas. 13. gast-cofa