#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

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