tyee

The leader or head of a tribe, organisation, business unit, or other group.

(dated, chiefly, British) An uncultured, crude and unrefined or uncouth ill-bred person.

(US) A member of the Ojibwe people.

Chiefie is military and aviation slang for a chief — specifically a senior non-commissioned officer in the Royal Air Force, often a Chief Technician or Chief Petty Officer. It's an affectionate, informal version of the rank, the kind of thing you'd hear in a hangar or mess hall rather than on a formal parade. The '-ie' diminutive softens the rank without undermining the respect behind it. Still used in British armed forces circles and occasionally in Commonwealth military contexts.

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