Transitive verb meaning ‘to obstruct with a barrier’ or ‘to surround with a barrier’. Fairly uncommon but attested (e.g. “The road was barriered off”).

barrerEmploi rare.

After the rockslide, workers barriered the trail to keep hikers away.

Après l’éboulement, les ouvriers ont barré le sentier pour tenir les randonneurs à l’écart.

barrieradjective

Attributive use of the noun in compound phrases (barrier cream, barrier method) functioning adjectivally.

barrièreS’emploie surtout dans des composés comme crème barrière.

Apply a barrier cream to protect the skin from chemicals.

Appliquez une crème barrière pour protéger la peau des produits chimiques.

Definitions

barriernoun

A structure or object that impedes or prevents passage.

The construction crew set up a barrier to keep pedestrians away from the work site.

A circumstance or obstacle that keeps people or things apart or prevents communication or progress.

Language can be a significant barrier to effective communication between different cultures.

A physical or metaphorical boundary or limit.

The new policy aims to break down barriers to entry for small businesses.

In physiology or biology, a membrane, layer of tissue, or other natural defense that prevents or restricts the passage of substances.

The blood–brain barrier prevents many drugs from entering the brain.

barrierverb

To erect or place a barrier across or around; to obstruct with a barrier.

After the rockslide, workers barriered the trail to keep hikers away.

barrieradjective

Serving to block, protect, or act as a barrier against something.

Apply a barrier cream to protect the skin from chemicals.