fiendheadn.
Etymology: -head suffix.Previous versions of the OED give the stress as: ˈfiendhead.
the world > the supernatural > deity > a devil > [noun] > title or personality of
1830 12 356 He will find a more flattering treatment of his fiend-head.
This entry has not yet been fully updated (first published 1896; most recently modified version published online June 2019).