Not too happy with you using autism to call someone dumb, but I'll leave this up assuming it was just a one-off.
Definition of sash for Students. 1  1 : a frame for a pane of glass in a door or window. 2  2 : the movable part of a window.
Miss America Sashes This is THE Miss America sash Stunning with triple rows of brilliant Swarovski Rhinestones and even a little pocket perfect for a lipstick hidden inside.