Below is a link to a picture of
boarded windows.
http://thoday.maggenhoof.co.uk/dsc00262.jpg
Boarded windows are simply windows that have been boarded up.
v. board·ed, board·ing, boards v. tr.
To cover or close with boards: board up a broken window.
To furnish with meals in return for pay.
To house where board is furnished: board a horse at a stable.
From:
http://dictionary.reference.com/search?q=boarded&r=67
I hope that helps!