The Collaborative International Dictionary of English v.0.48:

Chili \Chil"i\, n. [Sp. chili, chile.]
   A kind of red pepper. See Capsicum [Written also chilli
   and chile.]
   [1913 Webster]

WordNet (r) 3.0 (2006):

Chile
    n 1: a republic in southern South America on the western slopes
         of the Andes on the south Pacific coast [syn: Chile,
         Republic of Chile]
    2: very hot and finely tapering pepper of special pungency [syn:
       chili, chili pepper, chilli, chilly, chile]