| 单词 | rump-post |
| 释义 | > as lemmasrump-post rump-post n. Ornithology the pygostyle of a bird; the ploughshare bone. ΚΠ 1890 E. Coues Handbk. Field & Gen. Ornithol. ii. iv. 210 That extraordinary affair called the rump-post or pygostyle. 2000 E. B. Banning Archaeologist's Lab. x. 192/1 There are often..up to ten fused elements that form an upturned rump-post, or pygostyle, for moving the bird's tail feathers. < as lemmas |
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