vermiform appendix

part of the intestines

In human anatomy, the vermiform appendix (or appendix, pl. appendices) is a blind ended tube connected to the cecum, from which it develops embryologically. The term "vermiform" comes from Latin and means "wormlike in appearance". The cecum is a pouch-like structure of the colon. The appendix is near the junction of the small intestine and the large intestine.
See more at Wikipedia.org...

Vermiform appendix n. A wormlike intestinal diverticulum starting from the blind end of the cecum in the lower right-hand part of the abdomen and [more]Vermiform appendix - Community and Resources

Noun
1. a vestigial process that extends from the lower end of the cecum and that resembles a small pouch
(synonym) appendix, vermiform process, cecal appendage
(hypernym) process, outgrowth, appendage
(part-holonym) cecum, caecum, blind gut

noun
(a) any small tube or sac hanging from an organ
(b)
(vermiform) appendix = small tube shaped like a worm, attached to the caecum, which serves no function but can become infected, causing appendicitis; she had her appendix removed; an operation to remove the appendix.
grumbling appendix = chronic appendicitis
(NOTE: plural is appendices)