bandeau

noun

1. A band for the hair.

   “She wore a bandeau in her hair.”

   “You dress with a square glass before you, and a long glass behind you; your hair trusts to its own brown or black attractions, either curled or braided,—or you put on a wreath, a bunch of flowers, or a pearl bandeau;...”

   “an elaborate tombstone over a prebendary's widow, a dead lady with a Grecian nose, a bandeau, and an intricate lace veil; lying of course on a marble sofa”

   “Fragment of a wool cap, of which only the bandeau is well preserved. It is made in square knotting in alternate directions (see Fig. 79).”

2. A band.

   “1998, AANS Publications Committee: Setti S. Rengachary, MD, and Edward C. Benzel, MD, Calvarial and Dural Reconstruction: Neurosurgical Topics The frontal bandeau is then elevated en bloc. A Bi on BC1 (Midas Rex) bit is used to create the osteotomies circumferentially.”

   “The supraorbital bandeau is fixed to the nasal structure by a titanium [...] This bandeau is fixed by microplates. The median bone strip is fixed to the [...]”

3. A narrow, tight bra, especially when strapless; hence, any women's top made from a similar band of fabric.

   “At Paris fashion week, a few weeks later, Kim’s sister Kendall wore a minimalist black bandeau top that echoed Kim’s look.”