0 a concrete or plastic object used to form a fence, for example to separate lines of traffic or to protect people walking or working on a road from being hit by cars:
Jersey barriers ringed sensitive buildings to stop vehicles that might carry bombs.
Now unsightly Jersey barriers line many of Washington, DC's grand boulevards.
He said police may use six-foot-high fencing and jersey barriers.
There is a Jersey barrier in the center of the southbound lanes of the bridge.
Jersey walls block parking in front of the air traffic control tower.
