1. (noun) vein, vena, venous blood vessel
a blood vessel that carries blood from the capillaries toward the heart
"all veins except the pulmonary vein carry unaerated blood"
2. (noun) vein
a distinctive style or manner
"he continued in this vein for several minutes"
3. (noun) vein, nervure
any of the vascular bundles or ribs that form the branching framework of conducting and supporting tissues in a leaf or other plant organ
4. (noun) vein, mineral vein
a layer of ore between layers of rock
5. (verb) vein, nervure
one of the horny ribs that stiffen and support the wing of an insect
6. (verb) vein
make a veinlike pattern
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Definition of 'vein' 
