uropygiumPronunciation: /ˌjʊərə(ʊ)ˈpɪdʒɪəm/Definition of uropygium noun Zoology the rump of a bird, supporting the tail feathers. Derivatives uropygial adjective Origin: late 18th century: via medieval Latin from Greek ouropugionuropygium in other Oxford dictionaries Definition of uropygium in the US English dictionary
