vein

名词 vein:

1. a blood vessel that carries blood from the capillaries toward the heart
   同义词：vena, venous blood vessel
2. a distinctive style or manner
3. any of the vascular bundles or ribs that form the branching framework of conducting and supporting tissues in a leaf or other plant organ
   同义词：nervure
4. a layer of ore between layers of rock
   同义词：mineral vein
5. one of the horny ribs that stiffen and support the wing of an insect
   同义词：nervure

动词 vein:

1. make a veinlike pattern

1. The act or practice of opening a vein by incision or puncture to remove blood as a therapeutic treatment.
   静脉切开术，放血术切割静脉或穿孔来放血的行为或实践，作为一种医学治疗
2. There is a vein of melancholy in his character.
   他的性格中有少许忧郁的气质。
3. I am not in the vein for work.
   我没有心情工作。

vein

n.（名词）

Anatomy Any of a branching system of membranous tubes that carry blood to the heart.
【解剖学】 静脉：把血带到心脏的支状膜性管系统之一
A blood vessel.
血管
Botany One of the vascular bundles or ribs that form the branching framework of conducting and supporting tissues in a leaf or other expanded plant organ.Also called nervure
【植物学】 叶脉：维管束或主叶脉之一，形成传导和支撑一片叶子中的组织或其它扩展的植物器官的支状结构也作 nervure
Zoology One of the horny ribs that stiffen and support the wing of an insect.Also called nervure
【动物学】 翅脉：稳固并支撑昆虫的翅膀的角质翅脉之一也作 nervure
Geology A regularly shaped and lengthy occurrence of an ore; a lode.
【地质学】 矿脉：某种矿石的形状规则而且漫长的出现；矿脉
A long, wavy strip of a different shade or color, as in wood or marble, or as mold in cheese.
纹理；纹路；条纹：不同色度或颜色的波浪形长条，如在木材或大理石中，或在干酪中形成的纹理
A fissure, crack, or cleft.
裂缝；缝隙；裂纹
A pervading character or quality; a streak:
气质；倾向；特色；风格：一种遍布的特征或素质；个人特色：
例句：
.All through the interminable narrative there ran a vein of impressive earnestness.(Mark Twain)See Synonyms at streak
.在这冗长的叙述中从头到尾都有一种感人的、诚挚的风格.(马克·吐温)参见 streak

A transient attitude or mood.
情绪：一时的态度或情绪
A particular turn of mind:
心境的起伏：思想的某一特殊转变：
例句：
spoke later in a more serious vein.
后来以一种更严肃的心境讲话

v.tr.（及物动词）
veined,vein.ing,veins
To supply or fill with veins.
使有脉络或纹理
To mark or decorate with veins.
用脉络或纹理标记或装饰

来源：
Middle English veine
中古英语 veine
from Old French
源自 古法语
from Latin vôna
源自 拉丁语 vôna

【引伸】
vein.al
adj.（形容词）