1. blocking or getting in the way of something
Usage: present participle of obstruct
2. preventing or making difficult the progress of something
Usage: present participle of obstruct

Examples

• The fallen tree was obstructing the road.
• He was arrested for obstructing justice.
• The protesters were obstructing traffic downtown.
• Dense fog was obstructing the pilot’s view.
• She accused him of obstructing her career advancement.
• The debris was obstructing the water flow in the pipe.