noun, plural de·dans /-ˈdɑ̃/Show Spelled[-dahn]Show IPA.(used with a singular verb) Court Tennis.
1.
a netted winning opening of rectangular shape at the service side of the court. Compare grille(def. 5), winning gallery.
2.
the body of spectators behind this opening at a court-tennis match.
Origin: 1700–10; < French: (the) inside, Middle French (adv. and preposition), Old French dedenz, equivalent to de of (< Latin dē) + denz in (< Late Latin deintus, equivalent to Latin dē-de- + intus inside (adv.))