lambrequin

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A short ornamental drapery for the top of a window or door or the edge of a shelf.
2. n. A heavy protective cloth worn over a helmet in medieval times.

Century Dictionary and Cyclopedia

1. n. A piece of textile fabric, leather, or the like, hanging by one of its edges, and typically having the opposite edge dagged, slitted, scalloped, or otherwise cut in an ornamental manner: used in several ways. In medieval armor, a piece of stuff worn over the helmet of the fourteenth and fifteenth centuries, especially at tourneys and justs. This usage is figured in modern heraldry. See below.
2. n. In decorative art, painting on a surface more or less imitating or resembling a lambrequin, as in some Chinese vases, in which the upper part of the body is covered by solid decoration having a lower edge of jagged or ornamented outline.
3. n. In heraldry, the mantelet, represented as floating from the helmet, and often forming an important part of the ornamental decoration of the achievement.

Wiktionary

1. n. A short decorative drapery for a shelf edge or for the top of a window casing; a valance.
2. n. An ornamental hanging over upper part of window or along the edge of a shelf.
3. n. A border pattern with draped effect used in ceramics.
4. n. A covering for a helmet.
5. n. In heraldry, drapery attached to a helmet.

GNU Webster's 1913

1. n. A kind of pendent scarf or covering attached to the helmet, to protect it from wet or heat.
2. n. A leather flap hanging from a cuirass.
3. n. A piece of ornament drapery or short decorative hanging, pendent from a shelf or from the casing above a window, hiding the curtain fixtures, or the like.

WordNet 3.0

1. n. short and decorative hanging for a shelf edge or top of a window casing
2. n. a scarf that covers a knight's helmet