a. = fawney-rign.to go on the fawney: to practise the fawney-rig.
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1781 G. ParkerView Society & Manners II. 167 There is a large shop in London where these kind of rings are sold, for the purpose of going on the Fawney.
1789 G. ParkerLife's Painter xv. 174Fawny, an old, stale trick, called ring-dropping.