from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A masterpiece; the most memorable accomplishment of one’s career or lifetime.
from The Century Dictionary and Cyclopedia
- The most important piece or feature; the show piece; the main event or incident in any round or series, as the most forcible article in a magazine, the principal exhibition or performance in a show or theatrical entertainment, or the most substantial dish in a dinner.
From French pièce de résistance. (Wiktionary)