cavity wall

1. 1.

   a wall formed of two thicknesses of masonry with a space between them

   Broaderwall

Questions about cavity wall

What does cavity wall mean?

cavity wall means "a wall formed of two thicknesses of masonry with a space between them".

Is cavity wall a common word?

cavity wall is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.