"W"
'High-quality wood is used in <a href="http://www.j-archive.com/media/2011-12-27_DJ_07.jpg" target="_blank">this</a> type of <a href="http://www.j-archive.com/media/2011-12-27_DJ_07a.jpg" target="_blank">paneling</a> whose name is from the German for "wagon"'
wainscoting