Source : Webster's Revised Unabridged Dictionary (1913)

Superb \Su*perb"\, a. [F. superbe, L. superbus, fr. super over.
   See {Super-}.]
   1. Grand; magnificent; august; stately; as, a superb edifice;
      a superb colonnade.

   2. Rich; elegant; as, superb furniture or decorations.

   3. Showy; excellent; grand; as, a superb exhibition.

   {Superb paradise bird} (Zo["o]l.), a bird of paradise
      ({Paradis[ae]a, or Lophorina, superba}) having the
      scapulars erectile, and forming a large ornamental tuft on
      each shoulder, and a large gorget of brilliant feathers on
      the breast. The color is deep violet, or nearly black,
      with brilliant green reflections. The gorget is bright
      metallic green.

   {Superb warber}. (Zo["o]l.) See {Blue wren}, under {Wren}. --
      {Su*perb"ly}, adv. -- {Su*perb"ness}, n.

Source : WordNet®

superb
     adj 1: of surpassing excellence; "a brilliant performance"; "a
            superb actor" [syn: {brilliant}]
     2: surpassingly good; "a superb meal"