| 单词 | costa |
| 释义 | costa /kos"teuh, kaw"steuh/, n. , pl. costae /kos"tee, kaw"stee/. 1. a rib or riblike part. 2. the midrib of a leaf in mosses. 3. a ridge. 4. Entomol. a. Also called costal vein. a vein, usually marginal, in the anterior portion of the wing of certain insects. b. Also called costal margin. the anterior edge or border of the wing of certain insects. [1865-70; < L: rib, side. See COAST] |
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