Green’s Dictionary of Slang

shonk n.

also schonk, schonky
[? shonnicker n.; note RN shonky, a miser whose meanness is typified by their like of drinking but unwillingness to stand a round]

1. a derog. term for a Jew or foreigner.

[UK]N. Douglas London Street Games 35: What I think about Jimmy Nacko is this: judging by his name, he was just an old shonk of some kind.
[UK]G. Ingram Cockney Cavalcade 231: And you stop that noise, you snivelling schonky!
R. Postgate Verdict of Twelve 75: Let’s have a bit of fun with the shonks.
[UK]R. Llewellyn None But the Lonely Heart 340: Then there’s Yids, and Non Skids, to say nothing of the Shonks.
[UK]D. Powis Signs of Crime 200: Schonk See Schnoink.

2. the nose.

[UK]C. Wood ‘Prisoner and Escort’ in Cockade (1965) I iii: Your boot ... your old boots’ knickers ... your bloody great schonk ... but not your socks I beg of you.
[UK]D. Nobbs Fall and Rise of Reginald Perrin (1976) 282: It’s no skin off my shonk who you marry.

3. (Aus.) a dishonest business person.

Truckin’ Life (Newstead, Queensland) Sept. 22: [W]hat I am saying is stay away from the backyarder’s and the shonks.
National Times 15 July 17: We have to get the shonkies out of the business.
’Roy Slaven’ (John Doyle) Five South Coast Seasons 137: Tycho is a shonk, a criminal.
[Aus]D. Whish-Wilson Old Scores [ebook] The Conlan brothers were either local boys done good, [...] or smart-arse shonks, playing fast and loose with other people’s money.