| 单词 | uropygium |
| 释义 | uropygium /yoor'euh pij"ee euhm/, n. Ornith. the projecting terminal portion of a bird's body, from which the tail feathers spring. [1805-15; < NL < Gk ouropýgion, var. (with ouro- URO-2) of orropýgion, equiv. to orro-, comb. form of órros sacral bone + pyg(é) rump, buttocks + -ion dim. suffix] |
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