adv. [ It. or Sp. presto quick, quickly. See Prest, a. ] 1. Quickly; immediately; in haste; suddenly. [ 1913 Webster ]
Presto! begone! 'tis here again. Swift. [ 1913 Webster ]
2. (Mus.) Quickly; rapidly; -- a direction for a quick, lively movement or performance; quicker than allegro, or any rate of time except prestissimo. [ 1913 Webster ]