noun, masculine/fi.le/plural: filés
simple or twisted textile thread, as used for needlework; fine, equivalent precious metal thread, used in luxury production; dried and ground sassafras leaves used to spice and thicken gumbo
“Les filés d'or et d'argent ont maintes applications en orfèvrerie, couture etc.” — Gold and silver threads have plenty uses in jewelry, fashion etc.
From filer (“to turn into (a) thread(s)”), from Latin fīlāre, from fīlum (“thread”).