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. [Written also Colosseum.]