SACHEM Meaning of SACHEM in English [ 'seɪtʃəm , 'satʃəm ]■ noun1》 (among some American Indian peoples) a chief. 2》 N. Amer. informal a boss or leader.Originfrom Narragansett, 'chief'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004