Source : Webster's Revised Unabridged Dictionary (1913)

Tomahawk \Tom"a*hawk\, n. [Of American Indian origin; cf.
   Algonkin tomehagen, Mohegan tumnahegan, Delaware tamoihecan.]
   A kind of war hatchet used by the American Indians. It was
   originally made of stone, but afterwards of iron.

Tomahawk \Tom"a*hawk\, v. t. [imp. & p. p. {Tomahawked}; p. pr.
   & vb. n. {Tomahawking}.]
   To cut, strike, or kill, with a tomahawk.

Source : WordNet®

tomahawk
     n : weapon consisting of a fighting ax; used by North American
         indians [syn: {hatchet}]
     v 1: cut with a tomahawk
     2: kill with a tomahawk