Sentence:  The centrality of this particular trope can been seen in the <WSD>vignette</WSD> adorning the opening page of Denis Diderot and Jean le Rond d'Alembert's "Encyclopédie, ou dictionnaire raisonnée des sciences, des arts et des métiers" (1751–1752). 
Meaning of the word marked with <WSD> tags:  A decorative design, originally representing vine branches or tendrils, at the head of a chapter, of a manuscript or printed book, or in a similar position.