From Longman Dictionary of Contemporary Englishfenfen /fen/ (also fenland) noun [countable, uncountable] DNan area of low flat wet land, especially in eastern England
Examples from the Corpus
fen• An unsuitable Palladian mansion in an unexciting East Anglian village on the edge of the black fens.• Every fen went into more land.• Breeds on still and slow-moving fresh water with dense fringe of vegetation, also marshes, fens, bogs.• Wetland sites include all those found in lakes, swamps, marshes, fens, and peat bogs.• It has a fine collection of manorial and local government records, and its archive of fens drainage papers is unique.• Relatively little of the peat fens had been reclaimed in medieval times.• What the people wanted on the fen was what they had already: grazing.• The fens threw up some odd crimes. 