"Truckle is one of the finest words in the English language" - Will Self
A truckle is a large cylindrical piece of cheese. Often Stilton will come as a truckle
There is some contention as to how a truckle should be consumed. I would use a silver serving spoon to scoop the cheese onto my plate from the middle, the purist would take a slightly less bacchanalean approach:
"The top inch of the cheese should be cut a wedge at a time. Each wedge should be about 1 inch thick. Only proceed to the next layer of cheese when the final wedge has been taken from the previous layer. Always use a sharp knife and try to keep the cut as smooth and flat as possible." - TeddingtonCheese.co.uk
The triangles of hard cheese that you normally find in supermarkets are taken from a truckle in this manner.