fen1
n.
a low and marshy or frequently flooded area of land.
▸
(the Fens)
flat low-lying areas of Lincolnshire, Cambridgeshire, and Norfolk, formerly marshland but now largely drained.
▸Ecology wetland with alkaline, neutral, or only slightly acid peaty soil. Compare with bog.
Derivative
Etymology
OE fen(n), of Gmc origin.
fen2
n.
(pl. same)
a monetary unit of China, equal to one hundredth of a yuan.
Etymology
from Chin. fēn ‘a hundredth part’.