1. any structure that makes progress difficult

Similar word(s): impediment, impedimenta, obstructer, obstructor

Definition categories: man–made, construction, structure

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

Similar word(s): blockage

Definition categories: state

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

- the filibuster was a major obstruction to the success of their plan

Similar word(s): obstacle

Definition categories: thought, balk, baulk, check, deterrent, handicap, hinderance, hindrance, impediment

4. the act of obstructing

- obstruction of justice

Definition categories: act, hinderance, hindrance, interference

5. getting in someone's way

Definition categories: act, maneuver, manoeuvre, play