| Word | Definitions | Synonyms |
|---|---|---|
| platypus | (noun) small densely furred aquatic monotreme of Australia and Tasmania having a broad bill and tail and webbed feet; only species in the family Ornithorhynchidae | Synonyms: duck-billed platypus, duckbill, duckbilled platypus, Ornithorhynchus anatinus |
| polypus | (noun) a small vascular growth on the surface of a mucous membrane | Synonyms: polyp |