Definify.com
Webster 1913 Edition
Lambrequin
1.
A kind of pendent scarf or covering attached to the helmet, to protect it from wet or heat.
2.
A leather flap hanging from a cuirass.
Wilhelm.
3.
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.