From dialectal kille (“goat kid, small boy”), originally diminutive to kid (“fawn, originally also goat kid”). See also killing (“goat kid”) which also is a dimunitive of kid. kille c. En liten kille kom in i affären för att köpa godis. A small boy came into the store to buy candy. Det gick precis förbi några unga killar i 30-årsåldern. More @Wikipedia
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