(1):

(a.) Principal or most eminent in any quality or action; most distinguished; having most influence; taking the lead; most important; as, the chief topic of conversation; the chief interest of man.

(2):

(a.) Highest in office or rank; principal; head.

(3):

(n.) The upper third part of the field. It is supposed to be composed of the dexter, sinister, and middle chiefs.

(4):

(n.) The principal part; the most valuable portion.

(5):

(a.) Very intimate, near, or close.

(6):

(n.) The head or leader of any body of men; a commander, as of an army; a head man, as of a tribe, clan, or family; a person in authority who directs the work of others; the principal actor or agent.