The definition of a vein is a blood vessel that is part of the circulation system through which blood is carried or a streak of something.
(noun)See vein in Webster's New World College Dictionary
noun
Origin: ME veine < OFr < L vena
transitive verb
See vein in American Heritage Dictionary 4
noun
Origin:
Origin: Middle English veine
Origin: , from Old French
Origin: , from Latin vēna
.Related Forms:
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