[*** \mathrm{fen}^1] |fen|

source: By Dr Border at English Wikipedia - Transferred from en.wikipedia to Commons., Public Domain

a low and marshy or frequently flooded area of land:

〖時にF-〗(特にイングランド東部の)低湿地, 沼地.

e.g. 55 acres of fen

e.g. a flooded fen.

(the Fens) flat low-lying areas of eastern England, formerly marshland but largely drained for agriculture since the 17th century.

Ecology wetland with alkaline, neutral, or only slightly acid peaty soil. Compare with bog.

fenny |ˈfenē| adjective

Old English fen(n), of Germanic origin; related to Dutch veen and German Fenn.

[*** \mathrm{fen}^2] |fen|

noun (plural same)

a monetary unit of China, equal to one hundredth of a yuan.

from Chinese fēn ‘a hundredth part’.