Meaning of pièce de résistance*

pièce de ré•sis•tance

Pronunciation: (pyes du rā-zē-stäns' Eng. pē-es' du ri-zē-stäns'), [key]
— pl. pièces de ré•sis•tance
  1. the principal dish of a meal.
  2. the most noteworthy or prized feature, aspect, event, article, etc., of a series or group; special item or attraction.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.