Angel

1. An immortal, spiritual being attendant upon God. In medieval angelology, there are nine orders of spiritual beings. From the highest to the lowest in rank, they are: seraphim, cherubim, thrones, dominations or dominions, virtues, powers, principalities, archangels, and angels. The conventional representation of such a being in the image of a human figure with a halo and wings. I have had a visit from an angel.
2. A guardian spirit or guiding influence. Angels watch over each of us.
3. A kind and lovable person. One who manifests goodness, purity, and selflessness. My grandmother was an angel.
4. A financial backer of an enterprise, especially a dramatic production or a political campaign. The Broadway show needed an angel to finance it.