Wiktionary
chef d'oeuvre
n. (alternative form of chef-d'œuvre nodot=1 English) (gloss: a masterpiece).
chef d'œuvre
n. 1 A piece of work that has been given much critical praise, especially one that is considered the greatest work of a person's career. 2 A work of outstanding creativity, skill or workmanship. 3 A work created in order to qualify as a master craftsman and member of a guild.
Usage examples of "chef d'oeuvre".
My job was to spread the stuff onto slices of party pumpernickel and pass the tray Unless I had bought the meat myself I tried not to let the people I liked best taste Dad's chef d'oeuvre.