feather-hole is part of:

feather-hole contains:

Full expansion for feather-hole:
   100%  Jolly Roger Pirate Hat
   100%  Morion Helmet
   100%  Robin-Hood Hat
   100%  Tri-Corner Pirate Hat
    75%  DragonMasters Helmet, no feathers
    50%  Samurai Helmet w/ Clip
    50%  Visorless 2-Stud Hose Helmet