投案 Traditional form: 投案 Pinyin (reading): tóu'àn Definitions: to surrender to the authorities to turn oneself in (for a crime) Characters: 投 - to pitch, to throw; to bid, to invest 案 - file, legal case; bench, table Traditional characters: 投 - to pitch, to throw; to bid, to invest 案 - file, legal case; bench, table