A nickname derived from the name "Kate".
Young children often mispronounce "Kate" for
things such as "Kekk", "Kayk" or "Kett", hence the nickname "Kekk".
Little
child: Kekk,
hungry!
Kate: Okay hold on, sweetie.
or
Friend: "Hey, Kekk! What's up?"
Kate: "Hey, not
much!"