concrete >> /ˈkɑnˌkrit/
Definition: [transitive verb] Cover (an area) with concrete.
Example: the precious English countryside may soon be concreted over
Definition: [transitive verb] Form (something) into a mass; solidify.
Example: the juices of the plants are concreted upon the surface
Definition: [noun] A heavy, rough building material made from a mixture of broken stone or gravel, sand, cement, and water, that can be spread or poured into molds and that forms a mass resembling stone on hardening.
Example: slabs of concrete
Definition: [adjective] Existing in a material or physical form; not abstract.
Example: concrete objects like stones