an angel of the first order; usually portrayed as the winged head of a child
A six-winged angel; the highest choir or order of angels in Christian angelology, ranked above cherubim, and below God. They are the 5th highest order of angels in Jewish angelology. A detailed description can be found at the beginning of chapter 6
The word "seraph" is a back-formation from the plural "seraphim," which comes from Biblical Hebrew and originally referred to the six-winged angels described in Isaiah. While the plural appears in the King James Bible, the singular form was likely first introduced by John Milton in his 1667 epic poem Paradise Lost.