1. Insulation used to wrap around pipes, boilers or laid in attics to prevent loss of heat
   "They installed new lagging in the attic to improve the home's energy efficiency"

1. Hang (back) or fall (behind) in movement, progress, development, etc.
   "He lagged behind the group on the hike";
   - dawdle, fall back, fall behind
    
2. Cover with lagging to prevent heat loss
   "lag pipes"
    
3. [N. Amer] (billiards/pool) determine who plays first by simultaneously shooting balls to the far rail and back, with the player whose ball stops closest to the head rail winning
   "They lagged for the break";
   - string
    
4. (law) lock up or confine, in or as in a jail
   "The authorities lagged the suspect";
   - imprison, incarcerate, immure, put behind bars, jail, jug [N. Amer, informal], gaol [Brit], put away, remand, prison [archaic]

Derived forms: laggings

See also: fall

Type of: confine, cover, detain, follow, insulant, insulation

Encyclopedia: Lagging