Defn: A duel; also, the rules of dueling. [Obs.] Shak.

DUENA; DUENYA
Du*e"ña, n. Etym: [Sp.]

Defn: See Doña.

DUENESS
Due"ness, n.

Defn: Quality of being due; debt; what is due or becoming. T.
Goodwin.

DUENNA
Du*en"na, n.; pl. Duennas. Etym: [Sp. dueña, doña, fr. L. domina. See
Dame.]

1. The chief lady in waiting on the queen of Spain. Brande.

2. An elderly lady holding a station between a governess and companion, and appointed to have charge over the younger ladies in a Spanish or a Portuguese family. Brande & C.

3. Any old woman who is employed to guard a younger one; a governess. Arbuthnot.

DUET
Du*et", n. Etym: [Duetto.] (Mus.)