orca (n.)youdaoicibaDictYouDict[orca 词源字典]
"killer whale," introduced as a generic term for the species by 1841, from earlier use in scientific names, from Latin orca "cetacean, a kind of whale." Earlier in English, orc, ork "large whale" (c. 1590), from French orque, had been used vaguely of sea monsters (see orc).[orca etymology, orca origin, 英语词源]