bibliotheque /ˈbɪbliəˌθiːk/ noun2 •(no longer used) A collection of books or treatises.I could name several other English Tracts upon several Subjects, full of Primitive Christian Divinity, were such a Bibliotheque fit for this Place. — 1723 •(no longer used) A library.Bibliothecary. The Keeper of a Bibliotheque, Library, or Place for Books. — 1719 formsbibliotheques