E1C3H4E1L1L1E1
12 points
ECHELLE is validvalid
a device for spreading light into its component colors
(French) an arrangement of ribbons in the form of a ladder, decorating the front of the stomacher of a dress, etc.
a device for spreading light into its component colors
(French) an arrangement of ribbons in the form of a ladder, decorating the front of the stomacher of a dress, etc.