Chief

1. a. Very intimate, near, or close.
2. 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.
3. n. The principal part; the most valuable portion.
4. n. The upper third part of the field. It is supposed to be composed of the dexter, sinister, and middle chiefs.
5. a. Highest in office or rank; principal; head.
6. 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.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.