spec. in Natural History. Now rare.
| 单词 | θ19817 |
| 释义 | the world > life > biology > physical aspects or shapes > projection or protuberance > [noun] > ridge (4) welt1578 spec. in Natural History. Now rare. keel1597 A central ridge along the back or convex surface of any organ or structure, as a leaf, a petal, a glume of grass, the lower mandible of a bird, etc… bourrelet1859 A ridge-like excrescence. crista1889 A ridge or crest; spec. in various anatomical and zoological senses. |
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