three-pile

from The Collaborative International Dictionary of English v.0.48

Three-pile \Three"-pile`\, n.
   An old name for the finest and most costly kind of velvet,
   having a fine, thick pile.
   [1913 Webster]

         I have served Prince Florizel and in my time wore
         three-pile.                              --Shak.
   [1913 Webster]