architrave (n.)youdaoicibaDictYouDict[architrave 词源字典]
1560s, from Italian architrave, from archi- "beginning, origin" (see archon) + trave "beam," from Latin trabem (nominative trabs) "beam, timber," from PIE *treb- "dwelling" (see tavern).[architrave etymology, architrave origin, 英语词源]