Ymbren-wicu

According to the Old English Dictionary:

an;

ymbren-wicu

f. A week in which Ember-days fall :-- .iiii. Wódnesdagas on .iiii. ymbrenwican, L. Alf. pol. 43 ; Th. i. 92, 9. [Iðe ymbri wikis Wodnesdawes and Fridawes, A. R. 70, 6 note. Icel. Imbru-vika.] ymbren-wicu