For the purpose of this article and as used in this article:
(a) "Deputy sheriffs" or "deputies" shall have the same meaning as those terms are given in subdivision (2), subsection (a), section two, article fourteen of this chapter, and shall, when used in this article, be limited, except when specifically authorized or when the context in which used clearly requires a broader or different application and meaning, to those deputy sheriffs serving under civil service protection pursuant to the provisions of article fourteen of this chapter.
(b) "County commissions" shall mean the county commission, or tribunal in lieu thereof, in counties wherein a civil service system for deputy sheriffs is required to be in effect or wherein such system is put into effect pursuant to article fourteen of this chapter.
(c) "Professional liability insurance" means an insuring agreement wherein the insurer agrees, subject to policy agreements, exclusions, conditions and limits, to pay all sums which the insured deputy sheriff shall or may become legally obligated to pay as damages because of bodily injury (including death) or property damages sustained by others and caused by an occurrence and arising out of such deputy sheriff's occupancy, maintenance or use of official operations or conduct in the performance of official duties.