Definition of "lambrequin"

lambrequin

noun
plural lambrequins
1. A scarf or other piece of material used as a covering for a helmet.
  Quotations
  A dead man (he had, I think, been suffocated with a lambrequin, there being those who practice that art) lay at the corner.
  1980, Gene Wolfe, chapter XVI, in The Shadow of the Torturer (The Book of the New Sun; 1), New York: Simon & Schuster, page 146
2. (heraldry) A heraldic representation of such an item: mantling. Heraldic lambrequins.
3. (US) A short decorative drapery for a shelf edge or for the top of a window casing; a valance.
  Quotations
  So, after a spell, he decided to make the best of it and shoved us into the front parlor. 'Twas a dismal sort of place, with hair wreaths, and wax fruit, and tin lambrekins, and land knows what all.
  1913, Joseph C[rosby] Lincoln, chapter XII, in Mr. Pratt’s Patients, New York, N.Y., London: D[aniel] Appleton and Company
4. (ceramics) A border pattern with draped effect.