1911 Encyclopædia Britannica/Vignette

VIGNETTE (Fr. for “little vine”), in architecture, a running ornament, representing, as its name imports, a little vine, with branches, leaves and grapes. It is common in the Tudor period, and runs or roves in a large hollow or casement. It is also called trayle. From the transference of the term to book-illustration resulted the sense of a small picture, vanishing gradually at the edge.