ob ‧ struct /əbˈstrʌkt/ BrE AmE verb [transitive]
[ Date: 1600-1700 ; Language: Latin ; Origin: past participle of obstruere 'to build in the way' ]
1 . to block a road, passage etc SYN block :
A small aircraft was obstructing the runway.
The column obstructed our view of the stage.
2 . to prevent someone from doing something or something from happening, by making it difficult SYN block :
The group is trying to obstruct the peace process.
He was fined for obstructing the work of the police.