Word Origin for filoselle
Examples from the Web for filoselle
Filoselle is well adapted to couching, and may be laid double (24 threads).
Purse silk is often used for the latter; it is more brilliant than floss silk or filoselle.Beeton's Book of Needlework|Isabella Beeton
Couched cord or filoselle is useful in covering the raw edge of the onlay, not so much masking the joints as making them sightly.
Take two or three threads from a strand of filoselle in your needle at once, and do not take too long a needleful.
To be worked in outline and solid embroidery, in silk or filoselle, on satin de chine.Handbook of Embroidery|L. Higgin