1. (noun)slowdown, lag, retardation the act of slowingdown or falling behind
2. (noun)interim, meantime, meanwhile, lag the time between one event, process, or period and another
"meanwhile the socialists are running the government"
3. (noun)stave, lag one of several thin slats of wood forming the sides of a barrel or bucket
4. (verb)lag, dawdle, fall back, fall behind hang (back) or fall (behind) in movement, progress, development, etc.
5. (verb)imprison, incarcerate, lag, immure, put behind bars, jail, jug, gaol, put away, remand 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"
6. (verb)lag throw or pitch at a mark, as with coins