At an automatic half-barrier level crossing, a lifting barrier that does not block the whole road when in the horizontal position, placed on the left side in the UK according to driving on the left, and mostly used on narrower or quieter roads instead of two lifting barriers either side of the railway crossing.

Synonym of crash barrier

(motor racing, British spelling) alternative form of tire barrier

(figuratively, by extension) An impediment that prohibits the use, adoption, application, etc. of (something).

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

Alternative form of Jersey barrier

(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 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.

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