concrete
adjective
°Particular, perceivable, real.
"Fuzzy videotapes and distorted sound recordings are not concrete evidence that bigfoot exists."
°Not abstract.
"Once arrested, I realized that handcuffs are concrete, even if my concept of what is legal wasn’t."
noun
°A building material created by mixing Portland cement, water, and aggregate including gravel and sand.
"The road was made of concrete that had been poured in large slabs."
verb
°To cover with or encase in concrete; often constructed as concrete over.
"I hate grass, so I concreted over my lawn."
°To solidify.
synonyms: tangible