It might be used to affix a chapeau, 6 letters
Milliner's fastener, 6 letters
Millinery accessory, 6 letters
Millinery adjunct, perhaps, 6 letters
Ornamental sticker?, 6 letters
Quaint fashion accessory, 6 letters
Sticker through a lady's headgear, 6 letters
A long sturdy pin used by women to secure a hat to their hair, 6 letters