墊背 [垫－]

Jyutping zin3 bui3
Pinyin diàn bèi

Definitions (CC-CEDICT)
  1. to serve as a sacrificial victim
  2. to suffer for sb else
  3. scapegoat
  4. to share sb's fate
Definitions (Wiktionary)
  1. verb
    funerary mat, fig. to serve as scape-goat, to act as fall guy for sb else's misdemeanors