D defs.my
Entry 2 senses Webster, 1913

Presto

/prĕs'tō/ · Pres·to · IPA /ˈpɹɛstoʊ/
01 adv. Quickly; immediately; in haste; suddenly.
  1. 1.
    Quickly; immediately; in haste; suddenly.
    Presto! begone! 'tis here again.” Swift.
  2. 2.
    Quickly; rapidly; -- a direction for a quick, lively movement or performance; quicker than allegro, or any rate of time except prestissimo.(Mus.)