Wæter-seáþ

According to the Old English Dictionary:

es;

wæter-seáþ

m. A water-pit, well, reservoir :-- Ðá wæs ðǽr on óþre sídan ðæs hláwes gedolfen swylce mycel Wæterseát wǽre. Guthl. 4; Gdwin. 26, 8. Wæterseáðes cisternae, Hpt. Gl. 418, 27. [Myrige wæterseáðes ðǽr ábúten standeþ, Shrn. 13, 17.] wæter-seaþ