barrier

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. a structure or object that impedes free movement (Freq. 4)
• Hypernyms:
obstruction, obstructor, obstructer, impediment, impedimenta
• Hyponyms:
bannister, banister, balustrade, balusters, handrail,
barricade, breakwater, groin, groyne, mole, bulwark,
seawall, jetty, crash barrier, dam, dike, dyke,
fence, fencing, fender, wing, grate, grating,
hurdle, movable barrier, railing, rail, revetment, roadblock,
starting gate, starting stall
2. any condition that makes it difficult to make progress or to achieve an objective (Freq. 3)
- intolerance is a barrier to understanding
• Syn:
roadblock
• Hypernyms:
obstacle, obstruction
• Hyponyms:
ideological barrier, language barrier
3. anything serving to maintain separation by obstructing vision or access (Freq. 2)
• Hypernyms:
mechanism
• Hyponyms:
bar, blood-brain barrier, curtain