咬喙齒 [－－齿]

Jyutping ngaau5 fui3 ci2
Pinyin yǎo huì chǐ

Definitions (Wiktionary)
  1. verb, Hokkien, Quanzhou, Xiamen
    to grind one's teeth during sleep
    (syn.) 哺齿, 磨牙, 咬喙齒根, 哺齒, 咬喙齿根