lag

(noun) the act of slowing down or falling behind. Synonyms: slowdown, retardation.

(noun) the time between one event, process, or period and another. Synonyms: interim, meantime, meanwhile. Example: "Meanwhile the socialists are running the government."

(noun) one of several thin slats of wood forming the sides of a barrel or bucket. Synonyms: stave.

(verb) hang (back) or fall (behind) in movement, progress, development, etc.. Synonyms: dawdle, fall back, fall behind.

(verb) lock up or confine, in or as in a jail. Synonyms: imprison, incarcerate, immure, put behind bars, jail, jug, gaol, put away, remand. Examples: "The suspects were imprisoned without trial." "The murderer was incarcerated for the rest of his life."

(verb) throw or pitch at a mark, as with coins.

(verb) cover with lagging to prevent heat loss. Example: "Lag pipes."