• noun
• synonym
• antonym

• balaclava helmet (noun)
  1. a cap that is close-fitting and woollen and covers all of the head but the face
• batting helmet (noun)
  1. a helmet worn by the batter in baseball
• crash helmet (noun)
  1. a very strong hard hat that protects your head, and is worn by racing car drivers, people riding MOTORCYCLE s etc
• football helmet (noun)
  1. a padded helmet with a face mask to protect the head of football players
• gas helmet (noun)
  1. a protective mask with a filter; protects the face and lungs against poisonous gases
• helmet orchid (noun)
  1. any of numerous orchids of the genus Pterostylis having leaves in a basal rosette and green flowers often striped purple, brown or red with the dorsal sepal incurved to form a hood
  2. any of several orchids of the genus Coryanthes having racemes of a few musky-scented waxy flowers with a helmet-shaped lip process
• helmet-shaped (adjective)
  1. having the convex shape of a helmet
• pith helmet (noun)
  1. a large light hat worn especially in the past in hot countries, to protect your head from the sun
• space helmet (noun)
  1. a helmet worn by astronauts while in outer space
• sun helmet (noun)
  1. a lightweight hat worn in tropical countries for protection from the sun
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