Wordnet 3.0
NOUN (2)
1. 
 a native or inhabitant of Italy; 
2. 
 the Romance language spoken in Italy; 
ADJECTIVE (1)
1. 
 of or pertaining to or characteristic of Italy or its people or culture or language; 
- Example: "Italian cooking"
The Collaborative International Dictionary of English v.0.48:
Italian \I*tal"ian\, a. [Cf. F. italien, It. italiano. Cf.
   Italic.]
   Of or pertaining to Italy, or to its people or language.
   [1913 Webster]
   Italian cloth a light material of cotton and worsted; --
      called also farmer's satin.
   Italian iron, a heater for fluting frills.
   Italian juice, Calabrian liquorice.
      [1913 Webster]
The Collaborative International Dictionary of English v.0.48:
Italian \I*tal"ian\, n.
   1. A native or inhabitant of Italy.
      [1913 Webster]
   2. The language used in Italy, or by the Italians.
      [1913 Webster]
WordNet (r) 3.0 (2006):
Italian
    adj 1: of or pertaining to or characteristic of Italy or its
           people or culture or language; "Italian cooking"
    n 1: a native or inhabitant of Italy
    2: the Romance language spoken in Italy