In Hawaiian custom a lei is given in welcome, farewell or love, so dreaming of one is read as warmth received from others and an embrace offered in the form of flowers.
When this appeared in your dream, what were you feeling?
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.