DICT.TW Dictionary Taiwan

 cos·sack /ˈkɑˌsæk, sək/
 哥薩克人;騎馬巡警

 Cos·sack n.  One of a warlike, pastoral people, skillful as horsemen, inhabiting different parts of the Russian empire and furnishing valuable contingents of irregular cavalry to its armies, those of Little Russia and those of the Don forming the principal divisions.
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 Cossack
      n : a member of a Slavic people living in southern European
          Russia and Ukraine and adjacent parts of Asia and noted
          for their horsemanship and military skill; they formed an
          elite cavalry corps in czarist Russia