Definition of "concrete" []

• Of or relating to an actual, specific thing or instance; particular: had the concrete evidence needed to convict. (adjective)
• Existing in reality or in real experience; perceptible by the senses; real: concrete objects such as trees. (adjective)
• Formed by the coalescence of separate particles or parts into one mass; solid. (adjective)
• Made of hard, strong, conglomerate construction material. (adjective)
• A hard, strong construction material consisting of sand, conglomerate gravel, pebbles, broken stone, or slag in a mortar or cement matrix. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Set in concrete is a brass channel indicating the precise position and angle of said line (and there's one that runs across the pavement in Lewes outside the Shepherd Neame pub the name of which escapes me)."
• "The term concrete anchor refers to a heavy duty type of anchor that is usually of a larger diameter."
• "But I don't know when they will stop - since the concrete is all under the roof, I wonder if they're playing Jenga with their house."