Nunn-
Bosworth & Toller Anglo-Saxon Old English Dictionary - nunn-
According to the Old English Dictionary:
nunnan-mynster, es ;
- nunn-
- n. A nunnery :-- Ðæt nunmynster (monasterium virginum) ðæt mon nemneþ Coludesburhg, Bd. 4, 25; S. 599, 19 : 5. 3; S. 615, 41. In tó nunnanmynstre, Chart. Th. 231, 35. [Cf. Icel. nunnu-klaustr a nunnery.]