The Collaborative International Dictionary of English v.0.48:

Cirsoid \Cir"soid\, a. [Gr. ? a dilated vein + -oid.] (Med.)
   Varicose.
   [1913 Webster]

   Cirsoid aneurism, a disease of an artery in which it
      becomes dilated and elongated, like a varicose vein.
      [1913 Webster]