#helmet  a protective headgear made of hard material to resist blows
  supertype:  headdress__headdres  clothing for the head
  part:  beaver.armor_plate
  subtype:  batting_helmet__battinghelmet  a helmet worn by the batter in baseball
  subtype:  crash_helmet__crashhelmet  a padded helmet worn by people riding bicycles or motorcycles; protects the head in case of accidents
  subtype:  football_helmet__footballhelmet  a padded helmet with a face mask to protect the head of football players
  subtype:  hard_hat__tin_hat__tinhat__safety_hat  a lightweight protective helmet (plastic or metal) worn by construction workers
  subtype:  headpiece  a protective helmet for the head
  subtype:  space_helmet__spacehelmet  a helmet worn by astronauts while in outer space

No statement uses or specializes helmet; click here to add one.