Verb
cover with wooden boards
Source: WordNetWhenever you see a board up with "Trespassers will be prosecuted," trespass at once. Virginia Woolf
I've been on a show before where I was on a billboard and then, after like three or four weeks, they took the billboard down and replaced it with nothing. Took my face down and put a white board up. Matthew Perry (actor)
board up windows before the hurricane Source: Internet