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.
(shÄf) n. pl. sheaves (shÄvz) 1. A bundle of cut stalks of grain or similar plants bound with straw or twine. 2. A collection of items held or bound together: a sheaf of printouts. 3. An archer's quiver.