from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An outstanding accomplishment: "The bison is an evolutionary pièce de résistance, the result of thousands of years of genetic development under the toughest weather and geographical conditions” ( B.J. Roche).
- n. The principal dish of a meal.
French : pièce, piece + de, of, with + résistance, staying power, lastingness.(American Heritage® Dictionary of the English Language, Fourth Edition)