1Frequently in form Raw-head. A bugbear or bogeyman, typically imagined as having a head in the form of a skull, or one whose flesh has been stripped of its skin, invoked to frighten children. Also occasionally: a skull. Frequently used in conjunction with bloody-bones. Compare "raw-flesh", "raw neck".
2In allusive or figurative use.
Mid 16th century; earliest use found in John Rastell. From raw + head.