concrete

Concrete means something real. (adjective)

An example of concrete is evidence that the world is not flat.

Concrete means to make something into a solid mass. (verb)

An example of concrete is to form small pieces of stone into one solid mass.

Concrete is a mixture of cement sand, gravel and water which dries hard and strong and is used as a material for building. (noun)

An example of concrete is what many driveways are made of.

See concrete in Webster's New World College Dictionary

adjective

formed into a solid mass; coalesced
having a material, perceptible existence; of, belonging to, or characterized by things or events that can be perceived by the senses; real; actual
referring to a particular; specific, not general or abstract
made of concrete
Gram. designating a thing or class of things that can be perceived by the senses: a concrete noun

noun

a concrete thing, condition, idea, etc.
a hard, compact building material formed when a mixture of cement, sand, gravel, and water dries: used in making bridges, road surfaces, etc.

intransitive verb

to solidify

Related Forms:

See concrete in American Heritage Dictionary 4

(kŏn-krētˈ, kŏng-, kŏnˈkrētˌ, kŏngˈ-)

adjective

Of or relating to an actual, specific thing or instance; particular: had the concrete evidence needed to convict.
Existing in reality or in real experience; perceptible by the senses; real: concrete objects such as trees.
Formed by the coalescence of separate particles or parts into one mass; solid.
Made of hard, strong, conglomerate construction material.

noun (kŏnˈkrētˌ, kŏngˈ-, kŏn-krētˈ, kŏng-)

A hard, strong construction material consisting of sand, conglomerate gravel, pebbles, broken stone, or slag in a mortar or cement matrix.
A mass formed by the coalescence of particles.

verb (kŏnˈkrētˌ, kŏngˈ-, kŏn-krētˈ, kŏng-) con·cret·ed, con·cret·ing, con·cretes

verb, transitive