purfle
/ˈpəːf(ə)l
/noun
1An ornamental border, typically one inlaid on the back or belly of a violin.
1.1 archaic An embroidered edge of a garment.
verb [with object] (often as noun purfling)
Decorate (something) with an ornamental border: close examination of the violin shows that it contains the characteristic purfling
Origin
Middle English (as a verb): from Old French porfil (noun), porfiler (verb), based on Latin pro 'forward' + filum 'thread'.