逸書 [－书]

Jyutping jat6 syu1
Pinyin yì shū

Definitions (Wiktionary)
  1. name
    Classic of History (a collection of documents and speeches alleged to have been written by rulers and officials of the early Zhou Dynasty and before)
    (syn.) 書經, 佚书, 佚書, 尚書, 尚书, 书经
  2. noun
    lost ancient text
    (syn.) 佚書, 佚书