pelmet

/ˈpɛlmɪt/
noun
  1. A narrow board or strip of fabric fixed above a window to hide the curtain rod or blind fittings.
    • She sewed a fabric pelmet to cover the curtain track.
    • The pelmet matched the color of the wallpaper perfectly.
    • We installed a wooden pelmet to give the curtains a finished look.
Synonyms