As used in this chapter, the term:

(1) "Board of trustees" means the Board of Trustees of the District Attorneys Retirement Fund of Georgia.

(2) "Fund" means the District Attorneys Retirement Fund of Georgia.

(3) "Member" means a member of the District Attorneys Retirement Fund of Georgia.

(4) "Salary," "fees," and "compensation" includes all emoluments received by a district attorney for his services or resulting from the performance of his duties.