janitor
noun🔊/ˈdʒænɪtə(r)/
🔊/ˈdʒænɪtər/
(North American English, Scottish English) (North American English also custodian)
(British English caretaker)
a person whose job is to take care of a building such as a school or a block of flats or an apartment building （建筑物的）管理员，看管人，看门人 Word Originmid 16th cent.: from Latin, from janua ‘door’.