furring

noun

fur·​ring ˈfər-iŋ 

1

: a fur trimming or lining

2

a

: the application of thin wood, brick, or metal to joists, studs, or walls to form a level surface (as for attaching wallboard) or an air space

b

: the material used in this process

Word History

First Known Use

14th century, in the meaning defined at sense 1