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obstruct verb

Click to hear the UK pronunciation of this wordClick to hear the US pronunciation of this word/əbˈstrʌkt/ v [T]

Definition

to block a road, passage, entrance, etc. so that nothing can go along it, or to prevent something from happening correctly by putting difficulties in its way
After the earthquake many roads were obstructed by collapsed buildings.
Her view of the stage was obstructed by a pillar.
An accident is obstructing traffic on the M11.
to try to stop something from happening or developing
to obstruct a police investigation
He got five years in prison for withholding evidence and obstructing the course of justice.

(Definition of obstruct verb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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