American English

Definition of seal off phrasal verb from the Oxford Advanced American Dictionary

 

seal off

 phrasal verb
phrasal verb
 
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Phrasal Verbs

seal somethingoff

 
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(of the police, army) to prevent people from entering a particular area Troops sealed off the site following a bomb scare. The road will remain sealed off until the police have completed their investigations.
See the Oxford Advanced Learner's Dictionary entry: seal off