obstruction
noun /əbˈstrʌkʃn/
  /əbˈstrʌkʃn/
- [uncountable, countable] the fact of trying to prevent something/somebody from making progress
- the obstruction of justice
 - He was arrested for obstruction of a police officer in the execution of his duty.
 - The asylum seekers had to contend with continued bureaucratic obstruction.
 
Oxford Collocations Dictionaryadjective- physical
 - unlawful
 - wilful
 - …
 
- cause
 - create
 - clear
 - …
 
- obstruction of justice
 
 - [uncountable, countable] the fact of blocking a road, an entrance, a passage, etc.
- obstruction of the factory gates
 - The abandoned car was causing an obstruction.
 
Oxford Collocations Dictionaryadjective- physical
 - unlawful
 - wilful
 - …
 
- cause
 - create
 - clear
 - …
 
- obstruction of justice
 
 - [countable] something that blocks a road, an entrance, etc.
- It is my job to make sure that all pathways are clear of obstructions.
 
Extra ExamplesTopics Transport by car or lorryc2- If the tractor hit an obstruction, there was little to stop the driver from falling off.
 - The train driver receives a warning if there's an obstruction on the line ahead.
 
Oxford Collocations Dictionaryadjective- physical
 - unlawful
 - wilful
 - …
 
- cause
 - create
 - clear
 - …
 
- obstruction of justice
 
 - [countable, uncountable] (medical) something that blocks a passage or tube in your body; a medical condition resulting from this synonym blockage
- He had an operation to remove an obstruction in his throat.
 - bowel/intestinal obstruction
 
Oxford Collocations Dictionaryadjective- physical
 - unlawful
 - wilful
 - …
 
- cause
 - create
 - clear
 - …
 
- obstruction of justice
 
 - [uncountable] (sport) the offence of unfairly putting your body in front of a player of the other team so they cannot move to get the ball
 
Word Originmid 16th cent.: from Latin obstructio(n-), from the verb obstruere, from ob- ‘against’ + struere ‘build, pile up’.