Ge-swicnan

According to the Old English Dictionary:

ge-swicnan

p. ede; pp. ed To cleanse, clear; purgāre :-- Geswicne se hine be cxx hída let him clear himself with cxx hides, L. In. 14; Th. i. 110, 16: 15; Th. i. 112, 3: 52; Th. i. 134, 12. [Cf. Goth. swikns innocent, pure: Icel. sykn free from guilt, innocent.] ge-swicnan