Noun has 2 senses

• obstructor(n = noun.person) obstructer, obstructionist, resister, thwarter - someone who systematically obstructs some action that others want to take;


Derived form verb obstruct₁

• obstructor(n = noun.artifact) impediment, impedimenta, obstructer, obstruction - any structure that makes progress difficult;


Derived form verb obstruct₂