Definitions
A book in which appointments are kept, each listed beside the day when it occurs.
Word origin
From date + book.
Used in a sentence
“Mr. Peimer fills his datebook with invitations from seemingly endless mailing and e-mail lists, faxes, phone calls and by being the friend of a friend.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer2 curated clues
01“Appointment planner”8 letters
02“Appointment calendar”8 letters
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