鉤指 [钩－]

Jyutping ngau1 zi2
Pinyin gōu zhǐ

Definitions (Wiktionary)
  1. verb, Teochew
    to make a pinky promise
    (syn.) 鉤手指, 拉鉤, 拉钩, 钩手指尾, 鉤掌頭仔, 鉤手指尾, 钩手指, 钩掌头仔