Ymb-wícian

According to the Old English Dictionary:

ymb-wícian

to encamp about a place :-- Héht ymbwícigean Æthanes byrig mearclandum on (castrametati sunt in Etham in extremis finibus solitudinis, Ex. 13, 20), Cd. Th. 181, 22 ; Exod. 65. ymb-wician