Meaning of pièce d'occasion*

pièce d'oc•ca•sion

Pronunciation: (pyes dô-kä-zyôn'), [key]
— pl. pièces d'oc•ca•sion
  1. something prepared or used for a special occasion.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.