lagging

1 of 2

present participle of lag entry 2, lag entry 5, lag entry 6

lagging

2 of 2

noun

lag·​ging ˈla-giŋ 

: a lag (see lag entry 4 sense 2) or material used for making lags: such as

a

: material for thermal insulation especially around a cylindrical object

b

: planking used especially for preventing cave-ins in earthwork or for supporting an arch during construction

Word History

First Known Use

Noun

1851, in the meaning defined above