K [-]

Jyutping kei1 syu1
Pinyin kēi shū

Definitions (Wiktionary)
  1. verb, Taiwanese-Mandarin
    to cram; to study

K書 [-书]

Jyutping
Pinyin k shū

Definitions (CC-CEDICT)
  1. (Tw) to cram; to study (from Taiwanese 齧書, Tai-lo pr. [khè su], lit. to gnaw a book)
  2. see also 啃書|啃书[ken3 shu1]