1 definition by Epitoooooozy
Downsized or miniature versions of local phone directories that were portable enough to be carried around in your car. They were popular during the late 1990s and 2000s in the era when cell phones were becoming ever more commonplace and affordable (but before I-phones were popular) and many still relied on the white pages or yellow pages for information.
If you had a cell phone, the problem of carrying around a bulky phone book in your car was solved when miniature versions - known as companions - were made available and could easily be placed on the seat whenever a phone number needed to be looked up while on the road.
by Epitoooooozy February 18, 2022