concrete

from The American Heritage® Dictionary of the English Language, 5th Edition.

• adjective Of or relating to an actual, specific thing or instance; particular.
• adjective Relating to nouns, such as flower or rain, that denote a material or tangible object or phenomenon.
• adjective Existing in reality or in real experience; perceptible by the senses; real.
• adjective Formed by the coalescence of separate particles or parts into one mass; solid.
• adjective Made of hard, strong, conglomerate construction material.
• noun A hard, strong construction material consisting of sand, conglomerate gravel, pebbles, broken stone, or slag in a mortar or cement matrix.
• noun A mass formed by the coalescence of particles.
• intransitive verb To build, treat, or cover with hard, strong conglomerate construction material.
• intransitive verb To form into a mass by coalescence or cohesion of particles or parts.
• intransitive verb To harden; solidify.

from The Century Dictionary.

• In botany, growing together.
• To unite or coalesce into a mass or solid body; form concretions; coagulate; congeal; clot.
• To form into a mass, as separate particles, by cohesion or coalescence.
• To combine so as to form a concrete notion.
• To treat or lay with concrete: as, to concrete the foundations of a building; to concrete a cellar floor, or a sidewalk.
• Formed by coalescence of separate particles or constituents; forming a mass; united in a coagulated, condensed, or solid state.
• In logic, considered as invested with the accidents of matter; particular; individual: opposed to abstract.
• Bunyan is almost the only writer who ever gave to the abstract the interest of the concrete.
• In music, melodically unbroken; without skips or distinct steps in passing from one pitch to another.
• Consisting of concrete: as, a concrete pavement.
• noun A mass formed by concretion or coalescence of separate particles of matter in one body.
• noun In grammar and logic, a concrete noun; a particular, individual term; especially, a class-name or proper name.
• noun A compact mass of sand, gravel, coarse pebbles, or stone chippings cemented together by hydraulic or other mortar, or by asphalt or refuse tar.
• noun Sugar which has been reduced to a solid mass by evaporation in a concretor.

from the GNU version of the Collaborative International Dictionary of English.

• transitive verb To form into a mass, as by the cohesion or coalescence of separate particles.
• transitive verb To cover with, or form of, concrete, as a pavement.
• adjective United in growth; hence, formed by coalition of separate particles into one mass; united in a solid form.
• adjective Standing for an object as it exists in nature, invested with all its qualities, as distinguished from standing for an attribute of an object; -- opposed to abstract.
• adjective Applied to a specific object; special; particular; -- opposed to general. See Abstract, 3.
• adjective a number associated with, or applied to, a particular object, as three men, five days, etc., as distinguished from an abstract number, or one used without reference to a particular object.
• adjective a physical object or a collection of such objects.
• adjective a physical science, one having as its subject of knowledge concrete things instead of abstract laws.
• adjective one which slides continuously up or down, as distinguished from a discrete movement, in which the voice leaps at once from one line of pitch to another.
• noun A compound or mass formed by concretion, spontaneous union, or coalescence of separate particles of matter in one body.
• noun A mixture of gravel, pebbles, or broken stone with cement or with tar, etc., used for sidewalks, roadways, foundations, etc., and esp. for submarine structures.
• noun (Logic) A term designating both a quality and the subject in which it exists; a concrete term.
• noun (Sugar Making) Sugar boiled down from cane juice to a solid mass.
• intransitive verb To unite or coalesce, as separate particles, into a mass or solid body.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective Particular, perceivable, real.
• adjective Not abstract.
• adjective Made of concrete building material.
• noun A building material created by mixing Portland cement, water, and aggregate including gravel and sand.
• noun A solid mass formed by the coalescence of separate particles.
• noun US A dessert of frozen custard with various toppings.
• verb To cover with or encase in concrete; often constructed as concrete over.
• verb To solidify.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• verb cover with cement
• noun a strong hard building material composed of sand and gravel and cement and water