D defs.my
Entry 1 sense Webster, 1913

Poco

/pōk'-ō/ · Po·co · IPA /pˈoʊkoʊ/
01 adv. A little; -- used chiefly in phrases indicating the time or movement; as, poco più allegro, a little faster; poco largo, rather slow.
  1. 1.
    A little; -- used chiefly in phrases indicating the time or movement; as, poco più allegro, a little faster; poco largo, rather slow.(Mus.)
Phrases & compounds
‖Poco a poco — Little by little; as, poco a poco crescendo, gradually increasing in loudness.