Úter-mere
Bosworth & Toller Anglo-Saxon Old English Dictionary - úter-mere
According to the Old English Dictionary:
es;
- úter-mere
- m. Outer-sea, open sea :-- Hié forfóron him ðone múðan on útermere, Chr. 897; Erl. 95, 22. [Cf. Icel. út-sjár.] uter-mere