Sentence:  A man of fortune, who lives in London, may, in plays, operas, routs, assemblies, French cookery, French sauces, and French wines, spend as much yearly, as he could do, were he to live in the most hospitable manner at his <WSD>seat</WSD> in the country. 
Meaning of the word marked with <WSD> tags:  A temporary residence, such as a country home or a hunting lodge.