'Lagging' definitions:

Definition of 'lagging'

From: WordNet
noun
Used to wrap around pipes or boilers or laid in attics to prevent loss of heat

Definition of 'Lagging'

From: GCIDE
  • Lagging \Lag"ging\, n.
  • 1. (Mach.) The clothing (esp., an outer, wooden covering), as of a steam cylinder, applied to prevent the radiation of heat; a covering of lags; -- called also deading and cleading. [1913 Webster]
  • 2. Lags, collectively; narrow planks extending from one rib to another in the centering of arches. [1913 Webster]

Definition of 'Lagging'

From: GCIDE
  • Lag \Lag\, v. i. [imp. & p. p. Lagged; p. pr. & vb. n. Lagging.] To walk or more slowly; to stay or fall behind; to linger or loiter. "I shall not lag behind." --Milton.
  • Syn: To loiter; linger; saunter; delay; be tardy. [1913 Webster]