The Collaborative International Dictionary of English v.0.48:

Mahican \Mahican\ prop. n.
   Variant of Mohican. [Also spelled Mohican.]
   [WordNet 1.5]

WordNet (r) 3.0 (2006):

Mahican
    n 1: a member of the Algonquian people formerly living in the
         Hudson valley and eastward to the Housatonic [syn:
         Mohican, Mahican]
    2: the Algonquian language spoken by the Mohican [syn:
       Mohican, Mahican]