Source : Webster's Revised Unabridged Dictionary (1913)

Varicosity \Var`i*cos"i*ty\, n.
   1. The quality or state of being varicose.

   2. An enlargement or swelling in a vessel, fiber, or the
      like; a varix; as, the varicosities of nerve fibers.

Source : WordNet®

varicosity
     n : varix or varicose condition in which a vein is swollen and
         tortuous