Where does “korsettys” come from?

korsettys (Cornish) comes from Cornish korset, from English corset, from Old French corset, from Old French cors — body.

Ancestry of “korsettys”, step by step

korsettys traces back through two separate lines of ancestry.

via Cornish korset

StepLanguageWordMeaning
1Cornishkorsetcorset
2EnglishcorsetA woman's foundation garment, reinforced with...
3Old Frenchcorset
4Old Frenchcorsbody

via Cornish ys

StepLanguageWordMeaning
1Cornishyscorn
Every word from Old French cors