What does the word sash mean?

Usage examples for sash

  1. Then dashing down the sash, she turned swiftly, and encountered a pair of bright black eyes that looked in at her from the secure darkness of the hall. – Madeline Payne, the Detective's Daughter by Lawrence L. Lynch
  2. He wore plain, white clothes, with a wide red sash; and two others, dressed in the same way, stood near, as if awaiting his orders. – The Coast of Adventure by Harold Bindloss
  3. For answer Dot gave a final push and the sash shot up and locked half way. – Four Little Blossoms and Their Winter Fun by Mabel C. Hawley