The Collaborative International Dictionary of English v.0.48:

Vein \Vein\, v. t. [imp. & p. p. Veined; p. pr. & vb. n.
   Veining.]
   To form or mark with veins; to fill or cover with veins.
   --Tennyson.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Veined \Veined\, a.
   1. Full of veins; streaked; variegated; as, veined marble.
      "Veined follies." --Ford.
      [1913 Webster]

   2. (Bot.) Having fibrovascular threads extending throughout
      the lamina; as, a veined leaf.
      [1913 Webster]

WordNet (r) 3.0 (2006):

veined
    adj 1: having or showing markings that resemble veins [syn:
           veined, venose, veinlike]