| Main Entry: | vein |
| Part of Speech: | noun |
| Definition: | blood vessel |
Synonyms: |
capillary, course, current, duct, follicle, hair, lode, nerve, seam, stratum, streak, stripe, thread, venation |
| Notes: | arteries carry clean oxygenated blood from the heart, veins return impure blood back to the heart, and capillaries connect the ends of arteries to the beginnings of veins |