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English definition of “obstruction”

obstruction

noun uk   /əbˈstrʌk.ʃən/ us  
[C or U] something that blocks a road, passage, entrance, etc. so that nothing can go along it, or the act of blocking something in this way: There's some sort of obstruction on the railway tracks. [U] behaviour or actions that prevent something from happening or working correctly: They were charged with obstruction of the police/of justice (= preventing the police/law courts from doing their jobs). [U] in sport, an occasion when one player gets in the way of another and so prevents them from moving freely: The referee said it was obstruction.
(Definition of obstruction from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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