50 ILCS 710/1: Definitions.

As used in this Act:

(a) "Peace officer" means (i) any person who by virtue of his office or public employment is vested by law with a primary duty to maintain public order or to make arrests for offenses, whether that duty extends to all offenses or is limited to specific offenses, and who is employed in such capacity by any county or municipality or (ii) any retired law enforcement officers qualified under federal law to carry a concealed weapon.

(a-5) "Probation officer" means a county probation officer authorized by the Chief Judge of the Circuit Court to carry a firearm as part of his or her duties under Section 12 of the Probation and Probation Officers Act and Section 24-2 of the Criminal Code of 2012.

(b) "Firearms" means any weapon or device defined as a firearm in Section 1.1 of "An Act relating to the acquisition, possession and transfer of firearms and firearm ammunition, to provide a penalty for the violation thereof and to make an appropriation in connection therewith", approved August 3, 1967, as amended.