Colosseum (n.)youdaoicibaDictYouDict[Colosseum 词源字典]
1560s, Medieval Latin name for the classical Amphitheatrum Flavium (begun c.70 C.E.), noun use of neuter of adjective colosseus "gigantic;" perhaps a reference to the colossal statue of Nero that long stood nearby (see colossus). [Colosseum etymology, Colosseum origin, 英语词源]