vein

vein
noun

any of the tubes forming part of the blood circulation system of the body, carrying mainly oxygen-depleted blood towards the heart
静脉。比较artery
■(in general and figurative use) a blood vessel
（泛指，比喻）血管
he felt the adrenalin course through his veins.
他能感觉到全身血管中涌动着一股兴奋之情。
■(in plants) a slender rib running through a leaf or bract, typically dividing or branching, and containing a vascular bundle
（植物）叶脉
■(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
（昆虫）翅脉
■a streak or stripe of a different colour in wood, marble, cheese, etc
（木材、大理石、奶酪等）纹理，纹
■a fracture in rock containing a deposit of minerals or ore and typically having an extensive course underground
矿脉
■(figurative)a source of a specified quality or other abstract resource
(喻)（特性或其他抽象物）起源；来源
he managed to tap into the thick vein of discontent to his own advantage.
他设法为一己之利利用激烈的不满情绪。
[in sing.]a distinctive quality, style, or tendency
特色，倾向，气质
he closes his article in a somewhat humorous vein.
他以多少有点幽默的语气结束了文章。

派生
veinless
adjective
veinlet
noun
vein-like
( & )
adjective& adverb
veiny
( veinier, veiniest)
adjective(veinier, veiniest)
语源

Middle English: from Old French veine, from Latin vena. The earliest senses were 'blood vessel' and 'small natural underground channel of water'

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