The Gladiator is the people of Rome who were either paid to kill others or they were a slave that doesn't get paid at all. The reason for the gladiator is to assert the power of the Roman Empire. This was the entertainment of the Romans and it is also the entertainment of the people of the futuristic country of Panem in the Young Adult Book Series: The Hunger Games where 24 kids fight to the death much like the ancient gladiators of the Roman times
"A man trained to fight with weapons against other men or wild animals in an arena."
"A gladiator was an armed combatant who entertained audiences in the Roman Republic and Roman Empire in violent confrontations with other gladiators, wild animals, and condemned criminals. Some gladiators were volunteers who risked their legal and social standing and their lives by appearing in the arena."
"A person, usually a professional combatant, a captive, or a slave, trained to entertain the public by engaging in mortal combat with another person or a wild animal in the ancient Roman arena"
The American Heritage Dictionary Definition
A man trained to entertain the public by engaging in mortal combat in the Anc. Roman Arenas
Websters English Dictionary Definition
One who fought to the death for the entertainment of the Romans
Illustrated Oxford Dictionary Definition
A man, trained to fight with a sword, at the ancient Roman shows.
Layman's Terms Definition
A man who is taught to fight in Roman shows for the fun of the people
The origin of the word is the word Gladius, the gladius is a Spanish short sword that was commonly used by the Roman Army and the Gladiators who fought to the death in Rome
Any more definitions? Put them in the comment box below.