block (an opening, path, road, etc.); be or get in the way of:she was obstructing the entrance
prevent or hinder (movement or someone or something in motion):they had to alter the course of the stream and obstruct the natural flow of the water
deliberately make (something) difficult:fears that the regime would obstruct the distribution of food
Law commit the offence of intentionally hindering (a police officer):the appellants were arrested, and later convicted of obstructing the police
(in various sports) impede (a player in the opposing team) in a manner which constitutes an offence:an indirect free kick is awarded for intentionally obstructing an opponent
