The Collaborative International Dictionary of English v.0.48:

Varicose \Var"i*cose`\ (?; 277), a. [L. varicosus, from varix,
   -icis, a dilated vein; cf. varus bent, stretched, crooked.]
   1. Irregularly swollen or enlarged; affected with, or
      containing, varices, or varicosities; of or pertaining to
      varices, or varicosities; as, a varicose nerve fiber; a
      varicose vein; varicose ulcers.
      [1913 Webster]

   2. (Med.) Intended for the treatment of varicose veins; --
      said of elastic stockings, bandages, and the like.
      [1913 Webster]

WordNet (r) 3.0 (2006):

varicose
    adj 1: abnormally swollen or knotty; "varicose veins"