Noun
1. a blood vessel that carries blood from the capillaries toward the heart; all veins except the pulmonary carry unaerated blood
2. a distinctive style or manner;
"he continued in this vein for several minutes"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
4. a layer of ore between layers of rock
5. one of the horny ribs that stiffen and support the wing of an insect