Definition of "ranga"

You′re looking down upon ‘rangas’ crossing at the traffic lights below. What a cheap but satisfying form of Dublin entertainment! With the sun out, the redheads of Dublin glow like copper wire.

2009, David Foster, Sons of the Rumour, unnumbered page

Indeed, Julia Eileen Gillard may not even be the country′s first ranga prime minister; since all the old ones appear only in black and white, we can′t tell.

2010, Mungo MacCallum, Punch & Judy: The Double Disillusion Election of 2010, Large Print 16pt Edition, page ii

Fez′s resolutions: […] / 3. I will not call Blue ‘Ranga Girl’.

2010, Katrina Nannestad, Red Dirt Diary, HarperCollins Australia, unnumbered page

Joy and Lydia and Izzy despised the rest of the girls, from their plucked little threesome, disgusted by Yolanda's hairy calves, the faint down over a lip, Verla's ranga armpits.

2015, Charlotte Wood, The Natural Way of Things, Allen & Unwin, published 2018, page 183

SID: Yeah, all my friends hate me, I don't know why. MR. INCREDIBLE: Maybe it's because you're a fucking ranga you cockhead. SID: What the fuck did you just say, cunt? MR. INCREDIBLE: I said; ranga. SID: I am not a ranga!

2018, Aussie Disney (YouTube), Aussie Incredibles