adagio (Adjective) — (of tempo) leisurely.
adagio (Noun) — (music) a composition played in adagio tempo (slowly and gracefully). ex. "they played the adagio too quickly"
adagio (Noun) — A slow section of a pas de deux requiring great skill and strength by the dancers.
adagio (Adverb) — (music) slowly. ex. "here you must play adagio"