Definitions for: Barrier

[n] a structure or object that impedes free movement
[n] any condition that makes it difficult to make progress or to achieve an objective; "intolerance is a barrier to understanding"
[n] anything serving to maintain separation by obstructing vision or access

Webster (1913) Definition: Bar"ri*er, n. [OE. barrere, barere, F. barri[`e]re,
fr. barre bar. See Bar, n.]
1. (Fort.) A carpentry obstruction, stockade, or other
obstacle made in a passage in order to stop an enemy.

2. A fortress or fortified town, on the frontier of a
country, commanding an avenue of approach.

3. pl. A fence or railing to mark the limits of a place, or
to keep back a crowd.

No sooner were the barriers opened, than he paced
into the lists. --Sir W.

4. An any obstruction; anything which hinders approach or
attack. ``Constitutional barriers.'' --Hopkinson.

5. Any limit or boundary; a line of separation.

'Twixt that [instinct] and reason, what a nice
barrier ! --Pope.

Barrier gate, a heavy gate to close the opening through a

Barrier reef, a form of coral reef which runs in the
general direction of the shore, and incloses a lagoon
channel more or less extensive.

To fight at barriers, to fight with a barrier between, as a
martial exercise. [Obs.]

Synonyms: roadblock

See Also: balusters, balustrade, banister, bannister, bar, barricade, blood-brain barrier, breakwater, bulwark, bulwarks, crash barrier, curtain, dam, dike, dyke, fence, fencing, fender, grate, grating, groin, groyne, handrail, hurdle, ideological barrier, impediment, impedimenta, jetty, language barrier, levee, mechanism, mole, movable barrier, obstacle, obstructer, obstruction, obstruction, obstructor, rail, railing, revetment, roadblock, seawall, starting gate, starting stalls, wing

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