摊牌

摊牌	tān pái	to lay one's cards on the table
摊	tān	to spread out / vendor's stand
牌	pái	signboard; plaque; plate; tablet (CL:块) / brand; trademark (CL:个) / 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)