(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.

A game bird in the guinea fowl family, Numida meleagris

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

Synonym of helmet snail

Any of the family Cassidae of large sea snails.

plural of helmet shell

plural of helmet snail

A gastropod mollusc, Cassis cornuta

plural of helmeted guineafowl

A species of friarbird, Philemon buceroides, of eastern Indonesia, New Guinea, and northern Australia.