Source : Webster's Revised Unabridged Dictionary (1913)

Varix \Va"rix\, n.; pl. {Varices}. [L.]
   1. (Med.) A uneven, permanent dilatation of a vein.

   Note: Varices are owing to local retardation of the venous
         circulation, and in some cases to relaxation of the
         parietes of the veins. They are very common in the
         superficial veins of the lower limbs. --Dunglison.

Source : WordNet®

varix
     n : abnormally enlarged or twisted blood vessel or lymphatic
         vessel
     [also: {varices} (pl)]