fanni, fannie, fawnie, fani noun a finger ring 19-20. Compare vanister etymology: Romany fawnie, fanni ‘a finger ring’; Scots Gaelic fainne, Irish fánne ‘a finger ring’; attested by Galloway Tinkler-Gypsies and Grose and Egan (1823); form fawnie attested in Shelta note:

Grose and Egan (1823) attest the form fawney ‘a finger ring’; Hayward (2003) attests the forms foni, fawnie ‘a finger ring’ attesting the form fawnie is thieves’ slang. Scott & Crofton (1875) collected the forms Vóngusti, Vóngushi and Wóngushi with the meanings ‘ring’ and ‘finger’ from English Gypsies.