Synonyms for Barrier:

n.

confines, range, control. cattle guard, chain-link fence, fencing, partition, balustrade, include, chicken wire, thing, barricade tape. marker, divider, separator, peg. bar (noun)
earthwork, outwork, pale, fortification, limit, let, check, palisade, bamboo curtain, picket, stumbling block, trench, iron curtain, difficulty, stopper, limitation, embankment, boundary, preventive, sound or sonic or transonic barrier, barbed wire.
barrier (noun)
roadblock.
bulwark (noun)
guard, stronghold, outwork.
defense (noun)
counterattack, wall, stronghold, armor, aversion, defense, shelter, backfire, protection, argument, shield, safeguard, cover, rebuttal, guard, security, reply, return, support, barricade, screen, resistance, retort, fortress, buffer, answer, moat, harbor, response, countermeasure.
enclosure (noun)
confinement, envelopment, cell, enclosure, jail, cage, fence, pen, prison, trap.
fortification (noun)
earthwork, palisade.
hindrance (noun)
complication, stoppage, crimp, entrapment, impediment, blockage, opposition, dam, brake, plug, drag, hindrance, constraint, restriction, tangle, snag, handicap, snarl, stay, constipation, catch, encumbrance, obstruction, restraint, choke, burden, hurdle, jam, damper, blockade, congestion, delay, stop, mire, block, inhibition, bottleneck, obstacle, impedance, bafflement, bung, disadvantage, entanglement, drawback, frustration, deterrent, clog, impasse, interruption.
obstruction (noun)
boundary, fence, blockade, enclosure, hurdle, limit, moat, pale, wall, impediment, fortification, obstacle, curtain, palisade, barricade, stop, roadblock, trench, confines.
obstruction to goal (noun)
difficulty, encumbrance, stumbling block, drawback, check, restriction, limitation, preventive, restraint, hindrance, handicap.
restraint (noun)
restraint.
shade (noun)
curtain, shade, lamp shade, shadow, sunshade, veil, canopy, blind, umbrella, panoply, shutter, blinders, visor, awning, parasol, venetian blind.

Other synonyms:

cattle guard, balustrade, fencing, predicament, chain-link fence, barricade tape, divider, stumbling block, earthwork, inconvenience, separator, embarrassment, chicken wire, barbed wire. limitation, fortification, partition, marker. peg. traverse. stockade
palisade.

Usage examples for barrier

  1. Across the barrier the classes can and do exchange much more kindness than we at a distance imagine; and I do not see why this is not a good time to say that the English manner to dependants is beyond criticism. – London Films by W.D. Howells
  2. He reconnoitred the whole ground, and issued orders for the immediate destruction of the Kirkway, the last important barrier which separated the fleet from Leyden. – The Rise of the Dutch Republic, Volume II.(of III) 1566-74 by John Lothrop Motley Last Updated: January 25, 2009
  3. There was a barrier between us. – Ayesha The Further History of She-Who-Must-Be-Obeyed by H. Rider Haggard