We love to eat at home. We share a glass (or bottle) of wine, chat as I cook, and talk at the dining room table. We stopped cooking for four months and put on at least four pounds as we redid our kitchen. That is done.
To celebrate the end of the kitchen renovation, we threw a party and in the invite joked that the knavis (knowler plus davis) kitchen had been under the knife (knavis knitchen under the knife).
Hence the name.