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English definition of “rail sth off”

rail sth off

phrasal verb with rail     /reɪl/ verb [I + prep] formal
to close something, especially using railings : Part of the playing field had been railed off for use as a car park .Enclosing, surrounding and immersing
(Definition of rail sth off from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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