Personal Information Management

noun a book or electronic device in which names, addresses, and other contact information are stored

• I keep all my important contacts organized in my address book.
• Hey, can you check your address book for your cousin's number?
• I lost my address book and now I'm totally screwed.
• The library is like my address book for finding information on any topic.

noun a slang term used in Australian and British English meaning to inform on someone or report someone's wrongdoing to authorities

• He had to provide his date of birth (dob) for the official records.
• Can you tell me your dob so I can add it to the form?
• I don't remember my dob, can I just make something up?
• The company's success rate seems to be directly correlated with the CEO's dob.