Mór-hop

According to the Old English Dictionary:

es;

Mór-hop

n. A pool in a marsh :-- Hé byreþ blódig wæl . . . mearcaþ mórhopu he (Grendel) will bear the bloody corse . . . will mark the marshy pools (with the blood), Beo. Th. 904; B. 450. Cf. fen-hop. mor-hop