is a type of wetland
fed by groundwater and runoff, and containing peat
below the waterline. It is, in many ways, intermediate between a bog
and a marsh
is an Old English
word considered to have proto-Germanic origins, since it has cognates in Gothic
, Old Frisian
, Dutch and German.
See also the English district of East Anglia called The Fens.
Fen is an invented alternate plural of fan, and is used by science fiction, fantasy, and anime enthusiasts to distinguish themselves from "fans" such as football fans.