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单词 uropygia
释义

uropygium /ū-rō-pijˈi-əm/

noun

(in birds) the rump, which supports the tail feathers

ORIGIN: Gr ouropȳgion or orropȳgion, from orros the end of the sacrum, and pȳgē buttocks

uropygˈial adjective

uropygial gland noun

A gland at the base of the tail in most birds, which secretes oil used in preening

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更新时间:2026/7/18 17:42:15