The Collaborative International Dictionary of English v.0.48:

Vermiform \Ver"mi*form\, a. [L. vermis a worm + -form.]
   Resembling a worm in form or motions; vermicular; as, the
   vermiform process of the cerebellum.
   [1913 Webster]

   Vermiform appendix (Anat.), a slender blind process of the
      caecum in man and some other animals; -- called also
      vermiform appendage, and vermiform process. Small
      solid bodies, such as grape seeds or cherry stones,
      sometimes lodge in it, causing serious, or even fatal,
      inflammation. See Illust. under Digestion.
      [1913 Webster]