‖n. pl. [ NL. ] (Zool.) A tribe of worms including Phoronis. See Phoronis. [ 1913 Webster ]

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 ]