purfle

tr.v., -fled, -fling, -fles.
To finish or decorate the border or edge of.

n. also pur·fling (-flĭng)
An ornamental border or edging.

[Middle English purfilen, from Old French porfiler, from Vulgar Latin *prōfīlāre : Latin prō-, forth; see pro-¹ + Latin fīlum, thread.]

To edge ornamentally, as if with elaborate needlework or lacework.

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to ornament the border or edges of