Answer:

duc

Answer	Crossword Clue
DUC	French nobleman
DUC	French title
DUC	Nantes noble

DUC	Nantes nobleman
DUC	Parisian peer
DUC	Nimes nobleman
DUC	Vietnam's Le ... Tho
DUC	Title at Versailles
DUC	Le .. Tho
DUC	Le .. Tho of Vietnam
DUC	French noble

DUC	"Un gentilhomme"
DUC	One outranking a "comte"
DUC	Member of the noblesse
DUC	French title.
DUC	Nobleman: Fr.
DUC	French nobleman.
DUC	French royal noble.
DUC	French noble.

DUC	Bar-le-..., currant jam.
DUC	French lord.
DUC	Bar-le-... (currant jam).
DUC	Nobleman in France
DUC	Bar-le-...
DUC	Noble, in Versailles
DUC	Monsieur le ... (Louis Henri de Bourbon)
DUC	Dax duke

DUC	Titled Frenchman
DUC	Part of a French court
DUC	Nobel Peace Prize winner Le ... Tho