Simple Definition of platypus
: a small animal from Australia that has a bill like the bill of a duck, webbed feet, and a wide flat tail
Full Definition of platypus
plural platy·pus·es also platy·pi play \-ˌpī, -ˌpē\
: a small carnivorous aquatic monotreme mammal (Ornithorhynchus anatinus) of eastern Australia and Tasmania that has a fleshy bill resembling that of a duck, dense fur, webbed feet, and a broad flattened tail —called also duck-billed platypus
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