Meaning of poco a poco

po•co a po•co

Pronunciation: (pō'kō ä pō'kōIt.pô'kô ä pô'kô), [key]
— Music. Music.
  1. gradually; little by little: poco a poco accelerando.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.