The Collaborative International Dictionary of English v.0.48:

Camelshair \Cam"els*hair`\, a.
   Of camel's hair.
   [1913 Webster]

   Camel's-hair pencil, a small brush used by painters in
      water colors, made of camel's hair or similar materials.


   Camel's-hair shawl. A name often given to a cashmere
      shawl. See Cashmere shawl under Cashmere.
      [1913 Webster] Camembert