lagging

(noun) used to wrap around pipes or boilers or laid in attics to prevent loss of heat.

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

(verb) lock up or confine, in or as in a jail. Synonyms: imprison, incarcerate, lag, 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. Synonyms: lag.

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