Of, relating to, or having veins; of the nature of a vein; contained in veins; venous. Also (especially of a part of the fruiting body of a fungus): having folds or markings resembling veins.
Originally chiefly with reference to blood vessels; later most often in the context of leaves and fungi.
Late Middle English; earliest use found in Guy de Chauliac's Grande Chirurgie. From classical Latin vēnōsus venous; compare -ose.