n. a kind of low-lying ground, often wet or marshy
The Century Dictionary and Cyclopedia
n. Marshy land; fens; specifically, in England, the marshy region in Cambridge, Norfolk, Lincoln, and adjacent counties, now in great part reclaimed.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. low-lying wet land with grassy vegetation; usually is a transition zone between land and water
Word Usage
"The river Tern, which flows south from the Weald Moors – an ancient fenland that had been drained by the 18th century – met the Severn at Atcham and backed up across fields into parkland at Attingham."