- a narrow band of ribbon or the like worn around the head, usually as an ornament; headband.
early 14c., "headband," from O.Fr. filet, dim. of fil "thread." Sense of "cut of meat or fish" is early 15c., apparently so called because it was prepared by being tied up with a string.
"Her long, fair hair was held back by a fillet and fell loosely onto her shoulders."
- Connie Willis, Doomsday Book