obstruction

Everyday

1. An obstruction is something that blocks a road, path, pipe or passage so that things cannot get through. tree →
2. Obstruction is the act of stopping or delaying something on purpose. tree →
3. (sport) In football, hockey and other games, obstruction is illegally blocking an opponent with your body. tree →
4. (law) Obstruction of justice means trying to stop the police or a court from doing their job. tree →

In the lessons

In safety lessons it reminds children to keep fire exits and stairs clear of obstructions. In science and the body it can mean a blocked tube, such as something stuck in the throat. In sport it names a foul. Phrases: «cause an obstruction», «clear an obstruction», «obstruction of justice».

Examples

• A fallen tree caused an obstruction on the road. tree →
• Keep the fire exit free from any obstruction. tree →
• The plumber cleared an obstruction from the drain. tree →
• The referee gave a free kick for obstruction. tree →
• Bags in the corridor are an obstruction and someone could trip. tree →
• The doctor checked whether there was an obstruction in the dog's throat. tree →
• Lying to the police can be obstruction of justice. tree →

Note

Countable when it is a thing (an obstruction, two obstructions); uncountable when it is the action. Verb: obstruct. Related: obstacle (something in your way). In sport it is a foul even if no one falls.