Longman Dictionary of Contemporary English homepage

cavity wall

noun
     
Related topics: Construction
cavity wall [countable]
TBC a wall consisting of two walls with a space between them to keep out cold and noise:
cavity wall insulation

Dictionary pictures of the day
Do you know what each of these is called?
What is the word for picture 1? What is the word for picture 2? What is the word for picture 3? What is the word for picture 4?
Click on any of the pictures above to find out what it is called.

Explore our topic dictionary