The expression probably started in America in the late nineteenth century. Some experts believe it comes from a word in the Uersian or urdu languages -- chiz. The meaning is a thing. So the meaning of big cheese may be a big thing.______________________这个短语可能起源于19世纪后期的美国.一些专家认为这个词来源于波斯语或乌尔都语" chiz",意思是一件东西.所以big cheese的意思可能是一件大东西._______________________
