The Collaborative International Dictionary of English v.0.48:

Wainscot \Wain"scot\, v. t. [imp. & p. p. Wainscoted; p. pr. &
   vb. n. Wainscoting.]
   To line with boards or panelwork, or as if with panelwork;
   as, to wainscot a hall.
   [1913 Webster]

         Music soundeth better in chambers wainscoted than
         hanged.                                  --Bacon.
   [1913 Webster]

         The other is wainscoted with looking-glass. --Addison.
   [1913 Webster]

WordNet (r) 3.0 (2006):

wainscoted
    adj 1: fitted or decorated with panels or wainscoting [syn:
           paneled, wainscoted]