When you are reading on your Kindle 2 and you come across a word you don't know, you can look up the meaning of the word directly on your Kindle 2 as it has the complete "The New Oxford Dictionary" available on it. To look up a word, use the 5-way controller to move the cursor so that it is in front of the word you want to look up. If the word is found in the dictionary, it'll display an extract of the definition at the bottom of the screen. You can then see the complete word definition by pressing the Return key. Once you are done looking at the definition, press the Back key to remove it.