Green’s Dictionary of Slang

(Aus.) a fireman, the fire brigade.

2013		D. Whish-Wilson Zero at the Bone [ebook] Fireys concentrating on limiting the blazr from spreading further.
2021		P. Papathanasiou Stoning 63: ‘Want me to summon the firies?’.
2023		D. Whish-Wilson I Am Already Dead 172: [W]atching the car burn while waiting for the fireys and the police to arrive.