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béton

concrete

noun beh-TON Rare

Usage Note

béton refers to the building material (concrete). The colloquial adjective béton (invariable) means 'rock-solid' or 'watertight': un alibi en béton (an airtight alibi). Béton armé (reinforced concrete) is a key term in construction. The verb bétonner means both to concrete over and, figuratively, to make something airtight.

Examples

"Le mur est construit en béton."

Natural Translation

The wall is built in concrete.

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