barrier

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Related to Barriers: Trade barriers

barrier

1. 
a. an exposed offshore sand bar separated from the shore by a lagoon
b. (as modifier): a barrier beach
2. that part of the Antarctic icecap extending over the sea

Barrier

 

(in Russian, zaval), an antitank, antitransport, or anti-infantry obstacle. Barriers are made of lumber, stones, or snow on probable enemy routes of travel in places where it is difficult to bypass them. When setting up a timber barrier, trees of more than 20 cm in diameter are used. They are sawed down at a height of 60–120 cm and piled criss-cross with the crowns facing the enemy. In order to make it difficult to pull the barrier apart, the trees are not completely separated from their stumps; they are secured to them, woven with barbed wire, and also reinforced by the placement of land mines and high-explosive charges. During the Great Patriotic War of 1941–45 timber barriers were used extensively by Soviet troops on the defense in forested regions. Stone barriers are set up in mountains or in populated areas by demolishing cliffs or urban stone structures. Barriers made of snow can be devised in mountain and northern regions. In mining the Russian word zaval signifies the accidental destruction of a large rock mass in a mining excavation that disrupts its normal use.


Barrier

 

a lifting or sliding beam, usually installed at a railroad crossing to stop automobile, cart, and pedestrian traffic prior to the passing of a train. Barriers may be operated manually, mechanically, or automatically. Automatic barriers are operated by signals from the railroad’s automation and remote control systems; signal lights and acoustic devices may be used. The normal position for automatic barriers is the open position; for nonauto-matic barriers it is the closed position.

What does it mean when you dream about a barrier?

A barrier may signify that the dreamer is experiencing some obstacle in an arena of his or her life.

barrier

[′bar·ē·ər]
(ecology)
Any physical or biological factor that restricts the migration or free movement of individuals or populations.
(navigation)
Anything which obstructs or prevents passage of a craft.
(physics)

Barrier

[′bar·ē·ər]
(ordnance)
A passive acoustic detection system for submarines, consisting of hydrophones positioned on the ocean floor and connected by undersea cable to a land-based computer center.

barrier

1. Same as barricade.
2. According to the Architectural Barriers Act, any obstacle to the accessibility of a building by disabled people.

barrier

barrierclick for a larger image
i. As it relates to the sound barrier, it is a barrier to flight encountered by an airplane designed for subsonic speeds when it reaches transonic speeds and meets the turbulence incident of diverse degrees of compressibility. Intense buffet and loss of controls to a varying degree may be experienced at this speed.
ii. A net forming part of an arrester, or crash barrier system meant to arrest forward motion of an aircraft that is likely to overshoot the runway. Normally, the net lies horizontally on the ground and is raised when required. The vertical ropes of the barrier net are made of nylon, which are attached to the steel ropes at the top and the bottom of the barrier net.
References in classic literature ?
``I see him now; he leads a body of men close under the outer barrier of the barbican.*
The Carrion Caves consist of a series of twenty-seven connecting chambers, and present the appearance of having been eroded by running water in some far-gone age when a mighty river found its way to the south through this single breach in the barrier of rock and ice that hems the country of the pole.
The way was boulder-strewn, as had been that south of the barrier, so that we could see but a short distance ahead of us at any time.
USTR said commenters should submit information related to trade barriers in categories including other countries' import policies, technical barriers to trade, sanitary/phytosanitary standards, subsidies, government procurement restrictions, intellectual property protection, services barriers, digital trade and e-commerce barriers, and competition policies.
Owing to these benefits, automatic barriers are highly sought after in parking areas of modern infrastructures, in turn, fuelling the automatic barriers market growth.
Summary: The automatic barriers and bollards market is likely to witness a surge in demand owing to improving economic scenario and other macroeconomic factors.
First--and importantly for me as a designer--it's much easier to calculate the melting and pumping performance of parallel barriers, which cuts down on design time.
A five-person firm in Ronkonkoma was awarded a contract by the Long Island Rail Road to provide flood-protection barriers for the LIRR's West Side Yard in Manhattan.
EU Trade Commissioner Cecilia Malmstrom BRUSSELS, June 26 (KUNA) -- The European Commission Tuesday released its annual report on Trade and Investment Barriers which shows that 67 new barriers were recorded in 2017, taking the total tally of existing obstacles to 396 between 57 different trading partners of the EU around the world.
PESHAWAR -- Days after Chief Justice of Pakistan Mian Saqib Nisar ordered removal of check posts and other obstacles from the roads in Khyber-Pakhtunkhwa, local authorities dismantled nearly 100 check-posts and barriers at several spots of the province on Monday.
Liberty, MO, November 17, 2017 --(PR.com)-- Barriers are an important factor to be considered not only for the construction industry but also for window cleaning or other maintenance work where heights and risks are involved.