Mos

According to the Old English Dictionary:

es;

mos

n. A moss, a marshy place :-- In ðæt micle mos; of ðæm mose. Cod. Dip. Kmbl. iii. 121, 19. Cf. Tó mossetena gemǽre, and swá big mossetena gemǽre ... Ðis syndon ðæs landes gemǽre æt mosleáge. Cod. Dip. B. ii. 56, 22, 28. [N. of England and Scott, moss (as in moss-trooper): O.H. Ger. mos palus: cf. Icel. mosi a moss: Dan. mose a bog, moor.] mos