- janitor (n.)
[janitor 词源字典]
- 1580s, "an usher in a school," later "doorkeeper" (1620s), from Latin ianitor "doorkeeper, porter," from ianua "door, entrance, gate," from ianus "arched passageway, arcade" (see Janus) + agent suffix -tor. Meaning "caretaker of a building" first recorded 1708.[janitor etymology, janitor origin, 英语词源]