Nook Companion is a term used to describe the CRANNY, a 6-letter word. It is a device that was created by Barnes & Noble and released in 2009. The Nook Companion is a small electronic device that allows users to access their library of e-books, magazines, and newspapers. It also has features such as Wi-Fi connectivity, a touchscreen display, and a web browser. The Nook Companion is an ideal device for those who want to read digital content on the go.