雞精書 [鸡－书]

Jyutping gai1 zing1 syu1
Pinyin jī jīng shū

Definitions (粵典–words.hk)
  1. 名詞、香港
    講解​某學​科​嘅​精要​嘅​應​試​參​考​書​（​量​詞​：​本​）
    a condensed and simplified guide of a subject used by students before examinations; literally: chicken essence book
  2. 近義詞
    精讀

雞精書 [鸡－书]

Jyutping gai1 zing1 syu1
Pinyin jī1jing shū

Definitions (CC-CANTO)
  1. a summarised revision guide [colloquial]