Historical title used to refer to 司马迁 sī​mǎ​qiān and his father 司马谈 sī​mǎ​tán; specifically, the name by which 司马迁 sī​mǎ​qiān refers to himself in the 史记 shǐ​jì

A high-ranking official post established during the reign of Emperor Wu of the Han Dynasty, positioned in rank above the prime minister