Oristar, you make my brain hurt.
Why don't you learn ordinary English before you start on the extraordinarily difficult stuff?
I don't know about sikkative (although there is a paint company, Norwegian I think, that makes a wood treatment, called Sikkens. May be related to your question, I don't know.
My oldest, biggest dictionary gives this for OXGANG: (obsolete, exclusively historical) The eighth part of the CARUCATE or ploughland, varying from 10 to 18 acres, or more; a bovate
I had never heard the words sikkative, oxgang or bovate before; and now that I have, I'll try to forget them again