Webster's Revised Unabridged Dictionary · 1913

Chief

Chief (chēn) , noun

[Old English chief, chef, Old French chief, French chef, from Latin caput head, possibly akin to English head. Compare Captain, Chapter]

1.
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.
2.
The principal part; the most valuable portion.
The chief of the things which should be utterly destroyed. — 1 Sam. xv. 21
3.
(Heraldry) The upper third part of the field. It is supposed to be composed of the dexter, sinister, and middle chiefs.
Collocations (1)
In chief (Eng. Law) , (a) At the head; as, a commander in chief. From the king, or sovereign; as, tenure in chief, tenure directly from the king.

Chief , adjective

1.
Highest in office or rank; principal; head.
Chief rulers. — John. xii. 42
2.
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.
3.
Very intimate, near, or close. [Obsolete]
A whisperer separateth chief friends. — Bible (KJV) - Proverb xvi. 28