sachem

noun5

1. •
   (US, historical) A chief of one or several Native American tribe(s), especially of the Algonquians; a sagamore.

   • If a sachem was too harsh, a tribesman might leave and join another tribe. — 1983
2. •
   (US, informal) A boss, a leader.
3. •
   (US, historical) A high-ranking officer of the Tammany Hall political organization.

   • The society elects annually thirteen sachems, which represent the original thirteen States. […] The other officers of the society are a Secretary, Treasurer, Sagamore, and Wiskinkie. — 1865
4. •
   (US) A butterfly of the Americas, Atalopedes campestris.
5. •
   (informal, no longer used) An eminent member of a group, or an eminent person in society; a sagamore.