Etymology: Middle English cabok, from Scottish Gaelic caepok, a cheese. first known use in the 15th century.
This word does not appear to be in use in English today, except in the names of a few British cheeses (Maisie's Kebbuck, for example). But even then the word seems to imply just "cheese", not "whole wheel of cheese". Even in the realm of large historical cheeses, the term 'kebbuck' does not seem to come up.