Yes, vein is a Scrabble word!

Verb

1. Make a veinlike pattern

Noun

1. A blood vessel that carries blood from the capillaries toward the heart

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

4. A layer of ore between layers of rock

5. One of the horny ribs that stiffen and support the wing of an insect