Green’s Dictionary of Slang

shingler n.

[SE shingler, a woman who has her hair ‘shingled’, i.e. tapered from the back of the head to the nape of the neck; early adoptees of the fashion were presumably considered ‘fast’ and by ext. immoral]

1. [1900s–10s] (Aus.) a prostitute.

2. [1940s] (Aus.) a young woman.