block off

block off
    v 1: obstruct access to [syn: {blockade}, {block off}]
    2: render unsuitable for passage; "block the way"; "barricade
       the streets"; "stop the busy road" [syn: {barricade},
       {block}, {blockade}, {stop}, {block off}, {block up}, {bar}]
    3: block off the passage through; "We shut off the valve" [syn:
       {shut off}, {block off}, {close off}]