鴛鴦六七四 [鸳鸯－－－]

Jyutping jyun1 joeng1 luk6 cat1 sei3
Pinyin yuān yāng liù qī sì

Definitions (粵典–words.hk)
  1. 語句、術語
    牌九​入面​最​細​嘅​牌
    the smallest combination in Chinese dominoes Pai Gow games
  2. 語句、術語
    引申​指差​唔​多輸​硬
    very likely to lose the game