The word 铁道部 is formed by combining 铁, meaning "iron", with 道, meaning "way", to create 铁道, meaning "railway". This compound is then combined with 部, meaning "ministry" or "department", to specify the governmental authority responsible for railways, resulting in the term for "Railway Ministry".
Word Definition - 铁道部
tiě dào bùMinistry of Railways (MOR), disbanded in 2013 with its regulatory functions taken over by the Ministry of Transport 交通運輸部|交通运输部[jiāo tōng yùn shū bù]