Concrete
WordNet
adjective
(1) Capable of being perceived by the senses; not abstract or imaginary
"Concrete objects such as trees"
(2) Formed by the coalescence of particles
noun
(3) A strong hard building material composed of sand and gravel and cement and water
verb
(4) Form into a solid mass; coalesce
(5) Cover with cement
"Concrete the walls"
WiktionaryText
Etymology
From , past participle of ( + ).
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.
- Made of concrete building material.
- The office building had concrete flower boxes out front.
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.