Mere-menen
Bosworth & Toller Anglo-Saxon Old English Dictionary - mere-menen
According to the Old English Dictionary:
-mennen, e;
- mere-menen
- f. A siren :-- Meremenin sirina, Wülck. 47, 7. Meremennena sirenarum, Wrt. Voc. i. 84, 12. [Cf. Icel. mar-mennill; m. a sea-goblin.] Cf. mere-wíf. mere-menen