司马 sīmǎ Sima Origin Definitions Defs Strokes Stroke Words Sentences Sents sīmǎ Sima 司 sī Si a Chinese surname马 馬 mǎ proper noun [surname] a common Chinese surnamesīmǎ Minister of War · minor official · star name 司 sī noun to take charge of (bound form) to take charge of; to manage; to attend to; to operate马 馬 mǎ noun horse horse; any animal of the horse family; large mammal used for riding, pulling carts, or farm work