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English definition of “concrete”

concrete

noun [U] uk   /ˈkɒŋ.kriːt/ us    /ˈkɑːn-/
B2 a very hard building material made by mixing together cement, sand, small stones, and water: reinforced concrete a concrete floor/path a grey concrete building

concrete

verb [T] uk   /ˈkɒŋ.kriːt/ us    /ˈkɑːn-/
to cover something in concrete: Why did you concrete over that nice garden?

concrete

adjective uk   /ˈkɒŋ.kriːt/ us    /ˈkɑːn-/
C1 clear and certain, or real and existing in a form that can be seen or felt: They think she killed her husband, but they've no concrete evidence. We've got a general idea of what we want, but nothing concrete at the moment.
(Definition of concrete from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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