It is ringed by newly installed concrete barriers designed to prevent a truck or car from barreling in.

The structural fence is a physical barrier designed to stop falling rocks from reaching the tracks.

Newt fencing is a barrier designed to control the movement of Great Crested Newts, other amphibians or reptiles.

Even with the windbreaks and protective barriers designed to keep suicides from plummeting down onto Fifth Avenue, the strength of the elements could not be denied.

The levees in Terrebonne Parish are earthen barriers designed for storm drainage, not for hurricane protection.

It was a barrier designed to keep the sun safely at bay and a barrier, Vicki knew, that Henry could rip down in seconds if he chose.

Three- and four-man teams in other small boats were laying down brightly colored boom: floating barriers designed to impede oil slicks.

Physical, or mechanical, defenses are barriers or structures designed to deter herbivores or reduce intake rates, lowering overall herbivory.

Then technicians inject a viscous red compound that hardens to form an added thermal barrier designed to help prevent hot gases from reaching the O-rings.

The cabin doors were lightweight, hollow-core barriers designed for privacy and nothing more.