Gást-gerýne

According to the Old English Dictionary:

gǽst-gerýne, es;

gást-gerýne

n. A ghostly or spiritual mystery, a mystery of the mind; spīrĭtāle mystērium, ănĭmi mystērium :-- Him ða æðelingas ondsweorodon gástgerýnum the princes answered him in spiritual mysteries, Andr. Kmbl. 1716; An. 860 : Elen. Kmbl. 378; El. 189 : 2294;An. 1148. gast-geryne