Genge

According to the Old English Dictionary:

an;

genge

f. A privy, drain; latrina:--Genge latrina, Wrt. Voc. ii. 112, 15: 52, 15: 71, 8. Gengan latrine (ilia Arii in latrinae cuniculum defluxerant, Ald. 39, 7), 80, 65. Gengena latrinarum (spurca purgamenta, Ald. 54, 30), 84, 9: 52, 39. Cf. gang; XII. genge,-genge