What connection (if any) is there in Australian slang between 'dinkum' and 'dink' (meaning a ride on bicycle handlebars)?

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Chapters
00:00 What Connection (If Any) Is There In Australian Slang Between 'Dinkum' And 'Dink' (M
02:08 Accepted Answer Score 2
04:28 Thank you

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Tags
#etymology #slang #australianenglish #originunknown

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