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Webster Dictionary (0.00 / 0 votes) Rate this definition: Sash (noun) a scarf or band worn about the waist, over the shoulder, or otherwise; a belt; a girdle, -- worn by women and children as an ornament; also worn as a badge of distinction by military officers, members of societies, etc. Sash (verb) to adorn with a sash or scarf. Sash (noun)
Sash curtains are used to cover the lower sash of the windows. Rod pocket curtains have a channel sewn into the top of the fabric. A curtain rod is passed through the channel to hang. Thermal or Blackout curtains use very tightly woven fabric, usually in multiple layers. They not only block out the light, but can also serve as an acoustic or thermal dampener.