Definition of helmets:
(n) :
(clothing) A hard, protective head covering, typically part of armour.
(n) :
That which resembles a helmet in form, position, etc.
(n) :
(heraldry) Such a helm when placed above a shield on a coat of arms.
(n) :
The hood-shaped upper sepal or petal of some flowers, as of the monkshood or the snapdragon.
(n) :
A naked shield or protuberance on the top or fore part of the head of a bird.
(n) :
The upper part of a chemist's retort.