Helmet

·noun The upper part of a retort.

II. Helmet ·noun That which resembles a helmet in form, position, ·etc.

III. Helmet ·noun A naked shield or protuberance on the top or fore part of the head of a bird.

IV. Helmet ·noun The hood-formed upper sepal or petal of some flowers, as of the monkshood or the snapdragon.

V. Helmet ·noun A defensive covering for the head. ·see Casque, Headpiece, Morion, Sallet, and ·Illust. of Beaver.

VI. Helmet ·noun The representation of a helmet over shields or coats of arms, denoting gradations of rank by modifications of form.

VII. Helmet ·noun A helmet-shaped hat, made of cork, felt, metal, or other suitable material, worn as part of the uniform of soldiers, firemen, ·etc., also worn in hot countries as a protection from the heat of the sun.