excavate (v.)youdaoicibaDictYouDict[excavate 词源字典]
1590s, from Latin excavatus, past participle of excavare "to hollow out," from ex- "out" (see ex-) + cavare "to hollow, hollow out," from cavus "cave" (see cave (n.)). Related: Excavated; excavating.[excavate etymology, excavate origin, 英语词源]