英语词源字典 - 在线词源网站

arch-[arch- 词源字典]: also archi-, word-forming element meaning "chief, principal; extreme, ultra; early, primitive," from Latinized form of Greek arkh-, arkhi- "first, chief, primeval," comb. form of arkhos "chief" (see archon).[arch- etymology, arch- origin, 英语词源]
architrave (n.): 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).