[holmertz]

Thank you Paul,
I suppose you are referring to the word 'kak', which doesn't exist in Swedish. I had always thought this street's name had something to do with the very common Swedish meaning of 'kåk' as a dilapidated house, but it seems the street got its name from an ancient word not used in Swedish for hundreds of years. 'Kåken' (the kåk) is now also a common reference to a prison.
Best regards,
Gert