NOUN (2)

1. a brisk and lively tempo;

2. a musical composition or musical passage to be performed quickly in a brisk lively manner;


ADJECTIVE (1)

1. (of tempo) fast;


ADVERB (1)

1. in a quick and lively tempo;
- Example: "play this section allegro"

The Collaborative International Dictionary of English v.0.48:

Allegro \Al*le"gro\, a. [It., merry, gay, fr. L. alacer lively.
   Cf. Aleger.] (Mus.)
   Brisk, lively. -- n. An allegro movement; a quick, sprightly
   strain or piece.
   [1913 Webster]

WordNet (r) 3.0 (2006):

allegro
    adv 1: in a quick and lively tempo; "play this section allegro"
    adj 1: (of tempo) fast
    n 1: a brisk and lively tempo
    2: a musical composition or musical passage to be performed
       quickly in a brisk lively manner

The Free On-line Dictionary of Computing (19 January 2023):

Allegro

    The code name for the major Mac OS
   release due in mid-1998.


(http://devworld.apple.com/mkt/informed/appledirections/mar97/roadmap.html).

   (1997-10-15)