Noun | 1. | concrete - a strong hard building material composed of sand and gravel and cement and water |
Verb | 1. | concrete - cover with cement; "concrete the walls" |
2. | concrete - form into a solid mass; coalesce | |
Adj. | 1. | concrete - capable of being perceived by the senses; not abstract or imaginary; "concrete objects such as trees" Antonyms: abstract - existing only in the mind; separated from embodiment; "abstract words like `truth' and `justice'" |
2. | concrete - formed by the coalescence of particles |