1. fen - Noun
2. fen - Interjection
Low land overflowed, or covered wholly or partially with water, but producing sedge, coarse grasses, or other aquatic plants; boggy land; moor; marsh.
Source: Webster's dictionaryFeather-footed through the plashy fen passes the questing vole. Evelyn Waugh
If you will tell me why the fen appears impassable, I then will tell you why I think that I can cross it if I try. Marianne Moore
People with yuan fen are destined to like one another; Friendship develops even if a thousand miles apart. But should yuan fen be absent between two individuals, They will remain strangers despite sitting face-to-face. Adeline Yen Mah
Discretion,” said Fen with great complacency, "is my middle name.” "I dare say. But very few people use their middle names. Edmund Crispin
thousands of acres of marshland Source: Internet
the fens of eastern England Source: Internet