noun, plural coy·pus ( especially collectively ) coy·pu.
a large, South American, aquatic rodent, Myocastor (or Myopotamus ) coypus, yielding the fur nutria.

1785–95; < American Spanish coipú < Araucanian coipu Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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World English Dictionary
coypu (ˈkɔɪpuː) [Click for IPA pronunciation guide]
n , pl -pus, -pu
1.  an aquatic South American hystricomorph rodent, Myocastor coypus, introduced into Europe: family Capromyidae. It resembles a small beaver with a ratlike tail and is bred in captivity for its soft grey underfur
2.  the fur of this animal
[C18: from American Spanish coipú, from Araucanian kóypu]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Coypu is always a great word to know.
So is flibbertigibbet. Does it mean:
a chattering or flighty, light-headed person.
a gadget; dingus; thingumbob.
Example sentences
Also called the coypu organism: noun: living or once-living thing.
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