lag in WordNet English dictionary

1. hang (back) or fall (behind) in movement, progress, development, etc.
   lag  dawdle  fall back  fall behind 
   
2. lock up or confine, in or as in a jail
   "The suspects were imprisoned without trial"; "the murderer was incarcerated for the rest of his life"
   imprison  incarcerate  lag  immure  put behind bars  jail  jug  gaol  put away  remand 
   
3. throw or pitch at a mark, as with coins
   lag 
   
4. cover with lagging to prevent heat loss
   "lag pipes"
   lag 
   

1. the time between one event, process, or period and another
   "meanwhile the socialists are running the government"
   interim  meantime  meanwhile  lag 
   
2. the act of slowing down or falling behind
   slowdown  lag  retardation 
   
3. one of several thin slats of wood forming the sides of a barrel or bucket
   stave  lag