haiduk

from The Collaborative International Dictionary of English v.0.48

Haiduck \Hai"duck\ (h[imac]"d[.u]k), n. [G. haiduck, heiduck,
   fr. Hung. hajdu.]
   Formerly, a mercenary foot soldier in Hungary, now, a
   halberdier of a Hungarian noble, or an attendant in German or
   Hungarian courts. [Written also {hayduck}, {haiduk},
   {heiduc}, {heyduck}, and {heyduk}.]
   [1913 Webster]