The Saka (Old Persian: Sakā; New Persian/Pashto:ساکا; Sanskrit: Śaka; Greek: Σάκαι; Latin: Sacae; Chinese:塞; pinyin:Sāi; Old Chinese: *Sək) was the term used in Persian and Sanskrit sources for the Scythians, a large group of Eastern Iranian nomadic tribes on the Eurasian Steppe.