felt in WordNet English dictionary

1. a fabric made of compressed matted animal fibers
   felt 
   

1. change texture so as to become matted and felt-like
   "The fabric felted up after several washes"
   felt  felt up  mat up  matt-up  matte up  matte  mat 
   
2. cover with felt
   "felt a cap"
   felt 
   
3. mat together and make felt-like
   "felt the wool"
   felt