Mǽg-slaga

According to the Old English Dictionary:

an;

mǽg-slaga

m. The slayer of a kinsman:--Mǽgslaga parricida, Ælfc. Gl. 85; Som. 73, 114; Wrt. Voc. 49, 21: Ælfc. Gr. 7; Som. 6, 46. Se mǽgslaga Cain the fratricide Cain, Homl. Th. ii. 58, 28. Hér syndan mannslagan and mǽgslagan, Wulfst. 165, 27: 266, 26. mæg-slaga