obstructor

Definition of Obstructor in English :

someone who systematically obstructs some action that others want to take

any structure that makes progress difficult

WordNet Lexical Database for English. Princeton University. 2010.

Obstructor

verb (transitive)

1.

to block (a road, passageway, etc) with an obstacle

2.

to make (progress or activity) difficult

3.

to impede or block a clear view of

verb transitive

1.

to block or stop up (a passage) with obstacles or impediments; dam; clog

2.

to hinder (progress, an activity, etc.); impede

3.

to cut off from being seen; block (the view)

tr.v. ob·struct·ed, ob·struct·ing, ob·structs

1. To block or fill (a passage or opening) with obstacles or an obstacle.

2. To impede, retard, or interfere with; hinder: obstructed my progress. See Synonyms at hinder¹.

3. To be or get in the way of (a view or something to be seen). See Synonyms at block.