The Collaborative International Dictionary of English v.0.48:

Exotic \Ex*ot"ic\, a. [L. exoticus, Gr. ? fr. 'e`xw outside: cf.
   F. exotique. See Exoteric.]
   Introduced from a foreign country; not native; extraneous;
   foreign; as, an exotic plant; an exotic term or word.
   [1913 Webster]

         Nothing was so splendid and exotic as the ambassador.
                                                  --Evelyn.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Exotic \Ex*ot"ic\, n.
   Anything of foreign origin; something not of native growth,
   as a plant, a word, a custom.
   [1913 Webster]

         Plants that are unknown to Italy, and such as the
         gardeners call exotics.                  --Addison.
   [1913 Webster]

WordNet (r) 3.0 (2006):

exotic
    adj 1: being or from or characteristic of another place or part
           of the world; "alien customs"; "exotic plants in a
           greenhouse"; "exotic cuisine" [syn: alien, exotic]
    2: strikingly strange or unusual; "an exotic hair style";
       "protons, neutrons, electrons and all their exotic variants";
       "the exotic landscape of a dead planet"