Wordnet 3.0
NOUN (1)
1. 
 a native or inhabitant of Haiti; 
ADJECTIVE (1)
1. 
 of or relating to or characteristic of the republic of Haiti or its people; 
- Example: "Haitian shantytowns"
The Collaborative International Dictionary of English v.0.48:
Haitian \Hai"ti*an\ (h[=a]"t[i^]*an), a. & n.
   Same as Haytian; -- now the preferred spelling.
   [1913 Webster +PJC] haj
The Collaborative International Dictionary of English v.0.48:
Haytian \Hay"ti*an\ (h[=a]"t[i^]*an), a.
   Of or pertaining to Haiti; now usually written Haitian. --
   n. A native of Haiti. [Written also Haitian.]
   [1913 Webster]
WordNet (r) 3.0 (2006):
Haitian
    adj 1: of or relating to or characteristic of the republic of
           Haiti or its people; "Haitian shantytowns"
    n 1: a native or inhabitant of Haiti