NOUN (2)

1. (music) a composition played in adagio tempo (slowly and gracefully);
- Example: "they played the adagio too quickly"

2. a slow section of a pas de deux requiring great skill and strength by the dancers;


ADJECTIVE (1)

1. (of tempo) leisurely;


ADVERB (1)

1. slowly;
- Example: "here you must play adagio"

The Collaborative International Dictionary of English v.0.48:

Adagio \A*da"gio\, a. & adv. [It. adagio; ad (L. ad) at + agio
   convenience, leisure, ease. See Agio.] (Mus.)
   Slow; slowly, leisurely, and gracefully. When repeated,
   adagio, adagio, it directs the movement to be very slow.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Adagio \A*da"gio\, n.
   A piece of music in adagio time; a slow movement; as, an
   adagio of Haydn.
   [1913 Webster]

WordNet (r) 3.0 (2006):

adagio
    adv 1: slowly; "here you must play adagio"
    adj 1: (of tempo) leisurely
    n 1: (music) a composition played in adagio tempo (slowly and
         gracefully); "they played the adagio too quickly"
    2: a slow section of a pas de deux requiring great skill and
       strength by the dancers

Moby Thesaurus II by Grady Ward, 1.0:

32 Moby Thesaurus words for "adagio":
   a poco, adagietto, allargando, allegretto, allegro, andante,
   andantino, calando, crescendo, decrescendo, diminuendo, forte,
   fortissimo, larghetto, larghissimo, largo, legato, lento, marcando,
   pianissimo, piano, pizzicato, prestissimo, presto, rallentando,
   ritardando, ritenuto, scherzando, scherzo, spiccato, staccato,
   stretto