Appendix1. (n.) Something appended or added; an appendage, adjunct, or concomitant.
2. (n.) Any literary matter added to a book, but not necessarily essential to its completeness, and thus distinguished from supplement, which is intended to supply deficiencies and correct inaccuracies.
Thesaurus Entries
PS, Parthian shot, abdomen, accessory, addendum, adjunct, affix, afterthought, allonge, anus, appurtenance, back matter, blind gut, bowels, brain, cecum, chorus, coda, codicil, colon, colophon, commentary, conclusion, consequence, continuance, continuation, double take, duodenum, dying words, enclitic, endocardium, entrails, envoi, epilogue, follow-through, follow-up, foregut, giblets, gizzard, guts, heart, hindgut, infix, innards, inner mechanism, insides, interlineation, internals, interpolation, intestine, inwards, jejunum, kidney, kishkes, large intestine, last words, liver, liver and lights, lung, marginalia, midgut, note, parting shot, perineum, peroration, postface, postfix, postlude, postscript, prefix, proclitic, pump, pylorus, rectum, refrain, rider, scholia, second thought, sequel, sequela, sequelae, sequelant, sequent, sequitur, small intestine, spleen, stomach, subscript, suffix, supplement, swan song, tag, tail, ticker, tripes, vermiform appendix, viscera, vitals, works