vein
https://gyazo.com/d5f31e970bfeda15738b4fd39b2b35ac
source: By LadyofHats, Mariana Ruiz Villarreal - Did myself based in the information and diagrams found in:"gray's anatomy" thirthy sixth edition by Williams & Warwick."Sobotta Atlas der Anatomie des menschen" volume 1 and 2 18.Auflage by Urban & Schwarzenberg"Atlas fotografico de anatomia del cuerpo humano" 3a edicion by Yokochi, Rohen & Weinrebmultiple websites included:1, 2, 3, 4, 5, 6, and others., Public Domain
noun
1. any of the tubes forming part of the blood circulation system of the body, carrying in most cases oxygen-depleted blood toward the heart. Compare with artery.
〖しばしば～s〗 静脈(↔ artery; → jugular)
(in general and figurative use) a blood vessel:
(一般に)血管
e.g. he felt the adrenaline course through his veins.
(in plants) a slender rib running through a leaf or bract, typically dividing or branching, and containing a vascular bundle.
〘植〙 葉脈
(in insects) a hardened branching rib that forms part of the supporting framework of a wing, consisting of an extension of the tracheal system; a nervure.
(羽の)翅脈（しみゃく） 〘虫〙
2. a fracture in rock containing a deposit of minerals or ore and typically having an extensive course underground.
鉱脈, 岩脈
a streak or stripe of a different color in wood, marble, cheese, etc.
(チーズなどの)縞（しま）(模様); 木目; (大理石などの)石理（いしめ）
a body of subsurface water, especially as considered a source or potential source of water for a well or wells and thought of as flowing in a channel.
a source of a specified quality or other abstract resource:
e.g. he managed to tap into the thick vein of discontent to his own advantage.
3. in singular a distinctive quality, style, or tendency:
〖通例a ～ of A〗 A〈特質など〉の傾向, 特徴
e.g. he closes his article in a somewhat humorous vein.
DERIVATIVES
veinless adjective
veinlet | ˈvānlit | noun
veinlike | ˈvānˌlīk | adjective
veiny adjective (veinier, veiniest)
ORIGIN
Middle English: from Old French veine, from Latin vena. The earliest senses were ‘blood vessel’ and ‘small natural underground channel of water’.