noun1. an ornamental hanging covering the edge of a shelf or the upper part of a window or door
 2. a. a border pattern giving a draped effect, used on ceramics, etc
 b. (as modifier)
 a lambrequin pattern
  3. (often plural) a scarf worn over a helmet
  4.  heraldry  another name for mantling
 Word origin
C18: from French, from Dutch 
lamperkin (unattested), diminutive of 
lamper veil