Sentence:  Bought a little bit of Gruyere cheese, instead of our domestic <WSD>choke-dog</WSD> concern. When did I ever purchase anything for my own eating? But I will say no more of that. And now to the bread-mill. 
Meaning of the word marked with <WSD> tags:  A very hard cheese.  Attributed variously to counties of the West Country of the United Kingdom such as Devon, Dorset and the Isle of Wight.