obstruction

noun

1. 1

   getting in someone's way

2. 2

   the act of obstructing

   obstruction of justice

3. 3

   any structure that makes progress difficult

4. 4

   something immaterial that stands in the way and must be circumvented or surmounted

   lack of imagination is an obstacle to one's advancement

   the poverty of a district is an obstacle to good education

5. 5

   the physical condition of blocking or filling a passage with an obstruction