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English definition of “block sth off”

block sth off

verb [T] uk phrasal verb with block   /blɒk/ us    /blɑːk/
to close a road, path, or entrance so that people cannot use it: All the roads out of the town had been blocked off by the police.
(Definition of block sth off from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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