腰眼 [－－]

Jyutping jiu1 ngaan5
Pinyin yāo yǎn

Definitions (Wiktionary)
  1. noun, figuratively
    nub or heart of the matter
  2. noun
    either side of the small of the back
    (syn.) 尾豹頭, 尾豹头
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）