twirl, the n.
1. (UK Und.) working as a fraudulent bookmaker, typically taking large bets but putting them down on a less popular horse – if the originally betted horse wins, the bookmaker simply claims the bettor was mistaken.
|cited in DU (1961).|
2. a confidence trick that involves the substitution of a fake jewel for a real one.
|(con. 1950s–60s) in Little Legs 10: Working the knocker, totting, or doing the tweedle and the twirl.|
working as a professional thief.
|Gilt Kid 85: There was only one way he knew of getting money. On the twirl. O.K. He was going on the job. He was going thieving.|