Search Result for "obstructor": 
Wordnet 3.0

NOUN (2)

1. someone who systematically obstructs some action that others want to take;
[syn: obstructionist, obstructor, obstructer, resister, thwarter]

2. any structure that makes progress difficult;
[syn: obstruction, obstructor, obstructer, impediment, impedimenta]


WordNet (r) 3.0 (2006):

obstructor n 1: someone who systematically obstructs some action that others want to take [syn: obstructionist, obstructor, obstructer, resister, thwarter] 2: any structure that makes progress difficult [syn: obstruction, obstructor, obstructer, impediment, impedimenta]