NOUN (2)

1. a native or inhabitant of Sardinia;

2. the Italian dialect spoken in Sardinia; sometimes considered a separate language with many loan words from Spanish;


ADJECTIVE (1)

1. of or relating to or characteristic of Sardinia or its people or its language;

The Collaborative International Dictionary of English v.0.48:

Sardinian \Sar*din"i*an\, a. [L. Sardinianus.]
   Of or pertaining to the island, kingdom, or people of
   Sardinia. -- n. A native or inhabitant of Sardinia.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Sardinian
    adj 1: of or relating to or characteristic of Sardinia or its
           people or its language
    n 1: a native or inhabitant of Sardinia
    2: the Italian dialect spoken in Sardinia; sometimes considered
       a separate language with many loan words from Spanish