The Collaborative International Dictionary of English v.0.48:

Woolen \Wool"en\, a. [OE. wollen; cf. AS. wyllen. See Wool.]
   [Written also woollen.]
   [1913 Webster]
   1. Made of wool; consisting of wool; as, woolen goods.
      [1913 Webster]

   2. Of or pertaining to wool or woolen cloths; as, woolen
      manufactures; a woolen mill; a woolen draper.
      [1913 Webster]

   Woolen scribbler, a machine for combing or preparing wool
      in thin, downy, translucent layers.
      [1913 Webster]

WordNet (r) 3.0 (2006):

woollen
    adj 1: of or related to or made of wool; "a woolen sweater"
           [syn: woolen, woollen]
    n 1: a fabric made from the hair of sheep [syn: wool,
         woolen, woollen]