筆尖子 [笔－－]

Jyutping bat1 zim1 zi2
Pinyin bǐ jiān zi

Definitions (Wiktionary)
  1. noun, Xiang
    nib; tip of a pen, pencil, or writing brush
    (syn.) 笔尖, 筆端, 筆尖, 筆頭, 笔端, 笔头