reinforced concrete

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

• noun Poured concrete containing steel bars or metal netting to increase its tensile strength.

from The Century Dictionary.

• noun See concrete.

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

• Concrete having within its mass a system of iron or steel supports, such as bars, rods, or a heavy mesh, to provide increased tensile strength and shear resistance. Same as ferro-concrete.

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

• noun A building material made from Portland cement concrete with a matrix of steel bars or wires (rebars) to increase its tensile strength.

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

• noun concrete with metal and/or mesh added to provide extra support against stresses