cavity wall
Noun
Meaning
a wall formed of two thicknesses of masonry with a space between them
Source: WordNetHypernyms
Examples
Cavity wall main Cavity walls are walls made with a space between two "skins" to inhibit heat transfer.
Noun
a wall formed of two thicknesses of masonry with a space between them
Source: WordNetCavity wall main Cavity walls are walls made with a space between two "skins" to inhibit heat transfer.