Head-hunter

• (n.) A member of any tribe or race of savages who have the custom of decapitating human beings and preserving their heads as trophies. The Dyaks of Borneo are the most noted head-hunters.
Found on http://thinkexist.com/dictionary/meaning/head-hunter/

Head-hunter

Head'-hunt`er (-hŭnt`ẽr) noun A member of any tribe or race of savages who have the custom of decapitating human beings and preserving their heads as trophies. The Dyaks of Borneo are the most noted head- hunters. -- Head'-hunt`ing , noun
Found on http://www.encyclo.co.uk/webster/H/21
No exact match found