Filofax
noun [ C ] trademark uk/ˈfaɪ.lə.fæks/ us/ˈfaɪ.lə.fæks/ (also personal organizer)
菲洛法克斯记事本;活页记事簿
a brand name for a type of small book in which a record can be kept of phone numbers, future plans and visits, business meetings, etc.