What does barrier mean?
A barrier is something that stands in the way — most literally a physical structure such as a fence, gate, or railing that blocks or regulates movement, as at a railway crossing or car-park entrance. The word extends naturally to figurative uses: a language barrier hampers communication between people who speak different tongues, trade barriers are tariffs or restrictions that impede commerce, and social or cultural barriers can prevent individuals from accessing opportunities. Because it captures both concrete and abstract senses of obstruction, 'barrier' is one of the most versatile words in English for describing impediments of any kind. It carries a largely neutral connotation, though in political and social contexts it often implies something unjust that ought to be removed — hence common expressions like 'breaking down barriers'. Derived from the Old French 'barriere', meaning a bar or rampart, the word ultimately traces back to Late Latin 'barra', meaning a bar.
nounA barrier is a fence, gate, or other structure that blocks or restricts passage, or more broadly any obstacle that prevents movement, progress, or communication.
- A physical structure such as a fence, gate, or railing that blocks or controls passage.
- An immaterial obstacle that prevents progress, understanding, or interaction (e.g. a language barrier or trade barrier).
"The security guard lowered the barrier to let cars into the car park."
"Motorists were held up for an hour after the level-crossing barrier jammed."
"Despite the language barrier, the two teams managed to collaborate effectively."
Regular plural. Commonly used when referring to multiple figurative obstacles, e.g. 'trade barriers' or 'cultural barriers'.
"The treaty aimed to reduce tariffs and other trade barriers between the two nations."
The word 'barrier' comes from the same root as 'bar' — and the Great Barrier Reef, visible from space, is arguably the largest single barrier on Earth.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of barrier
The word 'barrier' entered English from Middle French 'barriere', meaning a bar, rampart, or fortification, in the late medieval period. Its ultimate root is the Vulgar Latin 'barra', meaning a bar or rod, which also gives English the word 'bar'. Cognates appear across Romance languages, including French 'barrière' and Spanish 'barrera'. Originally denoting a palisade or fortification used in military contexts, its meaning broadened over time to cover any structure or figurative force that obstructs passage or progress.
How barrier is actually used
Common in both formal and informal registers. Frequently used figuratively in phrases like 'break down barriers' or 'remove barriers to entry'. In British English, 'barrier' often specifically denotes a boom gate at a car park or railway crossing.
Easily confused with barrier
A barricade is typically an improvised obstruction hastily built to block passage (often during protests), while a barrier is a more general or permanent obstacle.
'Barrier' alone refers to an obstacle in general; 'barrier reef' is a specific term for a coral reef lying offshore parallel to a coastline, such as the Great Barrier Reef.