Source : Webster's Revised Unabridged Dictionary (1913)

Mohawk \Mo"hawk\, n.
   1. (Ethnol.) One of a tribe of Indians who formed part of the
      Five Nations. They formerly inhabited the valley of the
      Mohawk River.

   2. One of certain ruffians who infested the streets of London
      in the time of Addison, and took the name from the Mohawk
      Indians. [Slang] --Spectator. Macaulay.

Source : WordNet®

Mohawk
     n 1: a member of the Iroquoian people formerly living along the
          Mohawk River in New York state
     2: the Iroquoian language spoken by the Mohawk people