shah·toosh 
(shä-tsh)
(shä-tsh)n.
1. Exceptionally light silky wool from the undercoat of the chiru.
2.
a. A soft light fabric made from this wool.
b. A scarf or shawl made of this wool.
[Ultimately (perhaps via Punjabi) from Kashmiri shāhtōsa : shāh, king (from Persian; see SHAH) + tōsa, shahtoosh wool.]