There are 2 definitions of fen in English:

fen1

Line breaks: fen
Pronunciation: /fɛn
 
/

noun

1A low and marshy or frequently flooded area of land: a native species of fens and damp meadows [mass noun]: 55 acres of fen
More example sentences
  • Sand dunes, including the machair on the Hebrides, some types of lowland lochs, fens, meadows, hedgerows and blanket bogs are all mentioned as habitats needing further protection.
  • The bogs, fens, and estuarine marshes in the Lower Fraser Valley and Fraser Delta of British Columbia support large vegetable growing operations.
  • The birds occupy a range of wetland habitats: lakes, rivers, reedbeds, sedge fens, marsh dykes, ponds, flooded gravel pits and meres.
Synonyms
marsh, marshland, salt marsh, fenland, wetland, bog, peat bog, bogland, swamp, swampland; Scottish & Northern Englishmoss, carr; Irishcorcass; North Americanbayou, moor, pocosin, salina
archaic marish
1.1 (the Fens) The flat low-lying areas of eastern England, mainly in Lincolnshire, Cambridgeshire, and Norfolk, formerly marshland but largely drained for agriculture since the 17th century.
1.2 [mass noun] Ecology Wetland with alkaline, neutral, or only slightly acid peaty soil. Compare with bog.
More example sentences
  • Site-specific features of the hydroperiod and geochemistry of the waters influencing the site will determine the specific type of peatland that will develop from the mineral wetland, be it swamp, fen or bog.
  • The wetland is a large sedge- and sphagnum-dominated lakeside fen and cattail marsh that supports one of the most diverse wetland bird communities in the state.
  • It is the smallest patterned fen recorded in Maine; the next largest is 11 hectares.

Origin

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

Derivatives

fenny

adjective
More example sentences
  • Variously known an 'intermittent fever' or 'ague,' malaria had been endemic in the marshy, fenny lowlands of Europe and Africa for millennia.
  • Anyhow, you are left with something like the alliterative ‘fillet of a fenny snake’ becoming the rather leaden ‘fillet of a marshland snake’.

Definition of fen in:

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Word of the day glee
Pronunciation: gliː
noun
great delight, especially from one's own good fortune…

There are 2 definitions of fen in English:

fen2

Line breaks: fen
Pronunciation: /fʌn
 
/

noun (plural same)

A monetary unit of China, equal to one hundredth of a yuan.
More example sentences
  • Of some 10 million containers, 70 per cent were purchased at the rate of two fen each.
  • So he uses short messages to communicate with others because it costs only 10 fen a time.
  • Meanwhile, the company, China's biggest ethylene producer, saw its net profit leap more than fivefold to 1.03 billion yuan, or 31 fen per share, in the first half on rising sales.

Origin

from Chinese fēn 'a hundredth part'.

Definition of fen in: