Sec. 1A. DEFINITIONS. In this Act:

(1) "Board of Trustees" or "Board" means the Board of Trustees of the Firemen and Policemen Pension Fund.

(2) "Member" means a duly appointed and enrolled policeman or fireman of a city covered by this Act who is a contributing member of the pension fund.

(3) "Pension Fund" or "Fund" means the Firemen and Policemen Pension Fund.

(4) "Salary" means base pay plus longevity pay received by a member from the city for personal services rendered as a policeman or fireman excluding all other forms of compensation.

(5) "Wages" means salary, longevity, and overtime pay received by a member from the city for personal services rendered as a policeman or fireman excluding all other compensation.