Princeton's WordNet

1. gladiator(noun)

   (ancient Rome) a professional combatant or a captive who entertained the public by engaging in mortal combat

2. prizefighter, gladiator(noun)

   a professional boxer

Wiktionary

1. gladiator(Noun)

   (in ancient Rome) a person (professional or slave) who entertained the public by engaging in mortal combat with another, or with a wild animal

2. gladiator(Noun)

   a disputant in a public controversy or debate

3. gladiator(Noun)

   a professional boxer

Origin: From gladiator, from gladius.

Webster Dictionary

1. Gladiator(noun)

   originally, a swordplayer; hence, one who fought with weapons in public, either on the occasion of a funeral ceremony, or in the arena, for public amusement

2. Gladiator(noun)

   one who engages in any fierce combat or controversy

The Nuttall Encyclopedia

1. Gladiator

   one who fought in the arena at Rome with men or beasts for the amusement of the people, originally in connection with funeral games, under the belief, it is said, that the spirits of the dead were appeased at the sight of blood; exhibitions of the kind were common under the emperors, and held on high occasions; if the gladiator was wounded in the contest, the spectators decided whether he was to live or die by, in the former case, turning their thumbs downwards, and in the latter turning them upwards.

• swaardvegter, gladiatorAfrikaans
• مُجالِد، مُصارِعArabic
• гладиаторBulgarian
• gladiadorPortuguese (BR)
• gladiátorCzech
• der GladiatorGerman
• gladiatorDanish
• μονομάχοςGreek
• gladiadorSpanish
• gladiaatorEstonian
• گلادیاتورFarsi
• gladiaattoriFinnish
• gladiateurFrench
• גלדיאטורHebrew
• प्राचीन रोम में जानवरों या आदमियों से लड़ कर दूसरों का मनोरंजन करने वालाHindi
• gladijatorCroatian
• gladiátorHungarian
• gladiatorIndonesian
• skylmingaþrællIcelandic
• gladiatoreItalian
• 剣闘士Japanese
• 검투사Korean
• gladiatoriusLithuanian
• gladiatorsLatvian
• gladiatorMalay
• gladiatorDutch
• gladiatorNorwegian
• gladiatorPolish
• گلادیاتورPersian
• ګلادياتور، غښتلى، پياوړى، په پخوانى روم كې هغه سړى چې دخلكو دسات تيرى دپاره به يې په دوره له حيوان او يا بل انسان سره جنګ كاوهPashto
• gladiadorPortuguese
• gladiatorRomanian
• гладиаторRussian
• gladiátorSlovak
• gladiatorSlovenian
• gladijatorSerbian
• gladiatorSwedish
• นักต่อสู้กับคนหรือสัตว์ในสมัยโรมันThai
• gladyatörTurkish
• (古羅馬)競技場鬥士Chinese (Trad.)
• гладіаторUkrainian
• قدیم روما میں تیغ زنی کا مظاہرہ کرنے والا سدھا ہو تلواریاUrdu
• đấu sĩVietnamese
• 斗士（古罗马公开表演的格斗者）Chinese (Simp.)