A gastropod mollusc, Cassis cornuta

plural of helmeted guineafowl

plural of flying helmet

A leather head covering with earflaps used by early aviators.

A balaclava (type of headgear).

A mining helmet, a hard hat worn by miners that usually carries a light on the front. / Eggcorn of pith helmet.

(historical) A bronze helmet of Ancient Greek origin, covering the head and neck, with slits for the eyes and mouth.

plural of Corinthian helmet

(UK, uncountable) The invasive plant Impatiens glandulifera. / Used other than figuratively or idiomatically: see policeman, helmet.

plural of helmeted friarbird