2.Definition: getting in someone's wayCategory: General
"Lack of imagination is an obstacle to one's advancement", "The poverty of a district is an obstacle to good education", "The filibuster was a major obstruction to the success of their plan"
Related Noun(s):obstacleCategory: General
4.Definition: the act of obstructing
"Obstruction of justice"Category: General
Related Noun(s):blockageCategory: General