To look up any word:
1Tap Look up word.
2Tap Keyboard.
3Enter the word you want to look up and tap Search. The definition is displayed in a dialog panel overlaying the reading content. A definition can be more than one page in length. Move between pages using the Next Page and Previous Page buttons.
4Tap OK when you have finished reading the definition to return to your reading. You are still in word lookup mode, and can look up another word.
5Tap Cancel to exit word lookup mode.
NOOK User Guide | Reading | 130 |