Definition of "sash"
noun:
-
A decorative length of cloth worn as a broad belt or over the shoulder, often for ceremonial or other formal occasions.
from Wiktionary, Creative Commons Attribution/Share-Alike License -
The opening part of a window usually containing the glass panes, hinged to the jamb, or sliding up and down as in a sash window.
from Wiktionary, Creative Commons Attribution/Share-Alike License -
A draggable vertical or horizontal bar used to adjust the relative sizes of two adjacent windows.
from Wiktionary, Creative Commons Attribution/Share-Alike License
-