polyglot

[T]hose coming to the warehouses' doors fired them, and burned all the books and the pillars of the church, […] A great want thereof there will be of books, specially Latin books and foreign books; and, among others, the Polyglottes and new Bible, which he believes will be presently worth £40 a-piece.

Laſtly, a polyg[l]ot or good linguiſt may alſo be term'd a uſefull learned man, ſpecially if vers'd in School-languages.

If you are interested in polyglot file formats, take a look at the polyglot web page in the Corkami wiki. There are various example polyglots, including a PDF file that is also a valid HTML file with JavaScript, as well as a valid Windows PE executable.