ap·pen·dix
 /əˈpɛndıks/  noun   [  count  ]
  1  pl   -dix·es  or   -di·ces /-dıˌsiːz/ : a section of extra information added at the end of a book
   In your textbooks, turn to Appendix 3: Glossary of Terms.
   The book has several appendixes/appendices.
  2  pl   -dixes : a small tube at the beginning of the large intestine that can be removed by surgery if it becomes infected