bouquiniste or bouquinist

“Heywood Hill’s boxes of books, with their blue-and-white address labels, still offer year-round bounty to customers all over the world, but competition from Amazon, an online bookseller, has forced the fashionable bouquiniste to reinvent itself. Under its new owner, Mitford’s nephew the Duke of Devonshire, it has quietly become a leading purveyor of bespoke libraries.” For the Person Who Has Everything; The Economist (London, UK); Dec 20, 2014.