Emily Dickinson Lexicon

SASH, n. [An Arabic word signifying a band. But this word when it signifies a frame, is referred by Ash and Bailey to the French chassis, a frame for a window, which is the chase of a printing press also. Johnson and his followers mistake the meaning of the word.]

1. A belt worn for ornament. Sashes are worn by military officers as badges of distinction, round the waist or over the shoulders. They are usually of silk, variously made and ornamented.
2. The frame of a window in which the lights or panes of glass are set. She ventures now to lift the sash. – Swift.