chief
A leader or head of a group of people, organization, etc.
(heraldry) The top part of a shield or escutcheon; more specifically, an ordinary consisting of the upper part of the field cut off by a horizontal line, generally occupying the top third.
The principal part or top of anything.
(sometimes ironic) An informal term of address.
(US, Canada, offensive) An informal term of address for a Native American or First Nations man.
Primary; principal.
(Scotland) Intimate, friendly.
(US, slang) To smoke cannabis.