‖n.; pl. Chefs-d'œuvre [ F. ] A masterpiece; a capital work in art, literature, etc. [ 1913 Webster ]
‖ pl. Hors d'œuveres /plu>. [ F., lit., outside of work. ] 1. Something unusual or extraordinary. [ R. ] [ Webster 1913 Suppl. ]
2. A dish served as a relish, usually at the beginning of a meal. [ Webster 1913 Suppl. ]