| midvein | (noun) the vein in the center of a leaf | Synonyms: midrib |
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| vein | (noun) one of the horny ribs that stiffen and support the wing of an insect | Synonyms: nervure |
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| (noun) a blood vessel that carries blood from the capillaries toward the heart | Synonyms: vena, venous blood vessel |
| (noun) a distinctive style or manner | - |
| (noun) a layer of ore between layers of rock | Synonyms: mineral vein |
| (noun) any of the vascular bundles or ribs that form the branching framework of conducting and supporting tissues in a leaf or other plant organ | Synonyms: nervure |