Green’s Dictionary of Slang

1. a prostitute or promiscuous woman; also atttrib.

1922		Rockhampton Bulletin (Qld) 24 May 7/6: Aitken gets all mixed up with a low heel lady named Mary. She wants $5000. ‘The singin’ kid’ keeps Aitken from paying and [...] swinging for murder when the low-heel’s pal is shot.
1939		K. Tennant Foveaux 311: In this crowd of low heels, quandongs and ripperty men, she looked at her ease and yet not of them.
1941		Sydney Sportsman (Surry Hills, NSW) 29 May 16/4: If Rhythmic is not a vastly improved animal who will shortly be winning [...] handicaps, then we are foolish enough to think that ‘low-heel’ means a sandal-wearer.
1951		D. Stivens Jimmy Brockett 56: If you do see a sort on her own it’s an even chance she’s a pro or a lowheel.
1955		N. Pulliam I Travelled a Lonely Land (1957) 230/1: band (cake, cromo, low-heel) – a prostitute.
1962		(con. WWII) J.O. Killens And Then We Heard The Thunder (1964) 405: You make me feel like a lowheel – like – like a prostitute.

2. (Aus.) a term of abuse, irrespective of gender.

1940		Dly News (Perth) 27 Jan. 19/4: You see, it's ideally a step up from the ordinary, garden variety low heel in that Raffles is definitely an aristocratic cad.
1946		Cessnock Eagle (NSW) 8 Nov. 1/2: Mr. Mann (Lab.), pointing at Mr. Pie, said: ‘You are a dirty low-heel, that's what you are’.
1951		Macleay Chron. (Kempsey, NSW) 10 Jan. 1/3: 'I said: ‘[...] You are a low-heel and the scum of the earth.’ I then fired the shot when Lalor laughed at me. I called him a low b — , and told him to get going and never come back.

3. a down-and-out, a tramp.

1941

Baker Popular Dict. Aus. Sl.

4. (Aus.) a woman, without any derog. inference.

1949

Sun (Sydney) 28 Apr. 10/5: There were females every where, so I asked ‘Is Miss James there, please?’ [...] ‘Get into the next dress, Beryl,’ some lowheel said.