The term 'gladiator battleground' refers to an ARENA, which is a large, open-air space used for public events such as sports, concerts, and theatrical performances. In ancient Rome, arenas were also used for gladiator battles, where two or more combatants fought to the death for the entertainment of the crowd. The term 'ARENA' comes from the Latin word for sand, as the floors of these venues were often covered in sand to absorb the blood of the combatants.