Key: "S:" = Show Synset (semantic) relations, "W:" = Show Word (lexical) relations
Display options for sense: (gloss) "an example sentence"
Noun
S: (n) obstacle, obstruction (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"; "the filibuster was a major obstruction to the success of their plan"
S: (n) obstacle (an obstruction that stands in the way (and must be removed or surmounted or circumvented))