A safety feature of auto racing venues, consisting of stacked tires secured together, that provides a cushion in the event of an impact.

A massive system of coral reefs, found in the Coral Sea off the coast of Australia.

(anatomy) A structure in the central nervous system (CNS) that keeps various substances found in the bloodstream out of the brain while allowing in the substances essential to metabolic function, e.g. oxygen.

A barricade erected at a public event, such as a rally or festival, to prevent people from entering certain areas.

plural of crowd control barrier

A large island in the Hauraki Gulf off the coast of the North Island, New Zealand. The smaller Little Barrier Island is to the west of it.

a means of limiting imports without charging a tariff in the form of taxes or duties; an import restriction.

plural of non-tariff barrier

Alternative form of Jersey barrier

plural of New Jersey barrier