導火索 [导－－]

Jyutping dou6 fo2 sok3
Pinyin dǎo huǒ suǒ

Definitions (CC-CEDICT)
  1. fuse (for explosive)
Definitions (Wiktionary)
  1. noun, figuratively
    event which triggers a subsequent major incident; direct cause
  2. noun
    fuse (cord)
Definitions (HSK3.0)
  1. HSK3 七一九级词汇表 #771