(astrophysics) A bright loop-like discharge of stellar matter in the corona of a star, connecting coronal holes of opposite magnetic polarity.

(military, slang) A style of soldier's helmet that looks the same or similar to the helmet used by the British Empire, Commonwealth and U.S. soldiery during World War I.

plural of washbasin helmet

plural of purple helmet

A helmet worn by astronauts to protect from the vacuum of outer space.

A game bird in the guinea fowl family, Numida meleagris

Any of the family Cassidae of large sea snails.

plural of helmet snail

plural of helmet shell

Synonym of helmet snail