Verb
obstruct access to
render unsuitable for passage
block off the passage through
Source: WordNetTo do theater you need to block off a hunk of time. George Takei
What did you expect? I don't know why we're so surprised. When you put your foot on a man's neck and hold him down for three hundred years, and then you let him up, what's he going to do? He's going to knock your block off. Lyndon B. Johnson
We tend to block off many of our senses when we're staring at a screen. Nature time can literally bring us to our senses. Richard Louv
block the way Source: Internet
barricade the streets Source: Internet
stop the busy road Source: Internet