盾牌

盾牌	dùn pái	shield / pretext / excuse
盾	dùn	shield (CL:面) / (currency) Vietnamese dong / currency unit of several countries (Indonesian rupiah, Dutch gulden etc)
牌	pái	signboard; plaque; plate; tablet (CL:块) / brand; trademark / mahjong tile; domino; playing card (CL:张) / (bound form) fixed pattern for lyrics or set melody in classical poetry or music (used in 词牌 and 曲牌)