A fairy is read as wonder, wish and the small magic of everyday life. In older folk belief fairies are also capricious, so dream books see them as a playful, unpredictable force that is best treated with respect.
Where in your waking life have you met something like this lately?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.