Meaning

noun 100 fen equal 1 yuan in China

noun low-lying wet land with grassy vegetation; usually is a transition zone between land and water

originFrom Middle English fen, fenne, from Old English fenn (“fen; marsh; mud; dirt”), Proto-West Germanic *fani, from Proto-Germanic *fanją, from Proto-Indo-European *pen- (“bog, mire”). See also West Frisian fean, Dutch veen, German Fenn, Norwegian fen; also Middle Irish en (“water”), enach (“swamp”), Old Prussian pannean (“peat-bog”), Sanskrit पङ्क (paṅka, “marsh, mud, mire, slough”).

Etymology from Wiktionary, CC BY-SA 3.0