More generally than the above puts it: a coliseum is a large sports complex designed to resemble the structure in Rome known as the Coliseum.
Col`i*se"um (?), n. [NL. (cf. It. coliseo, colosseo), fr. L. colosseus colossal, fr. colossus a colossus. See Colossus, and cf. Colosseum.]
The amphitheater of Vespasian at Rome, the largest in the world.
© Webster 1913.
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