address book
Plural
address books
1
a notebook that is used for recording addresses, phone numbers, email addresses, and names of different people
- She keeps all her friends' contact details organized in her address book.
- I lost my address book during the move, so I need to ask everyone for their contact information again.
- The secretary updates the address book regularly to ensure all employees' information is current.
- She flipped through her old address book, reminiscing about friends she hadn't spoken to in years.
2
(in computing) software used to store names, emails, phone numbers, and other contact information