- cameo shells
- Helmet Hel"met, n. [OF. helmet, a dim of helme, F. heaume; of
Teutonic origin; cf. G. helm, akin to AS. & OS. helm, D.
helm, helmet, Icel. hj[=a]lmr, Sw. hjelm, Dan. hielm, Goth.
hilms; and prob. from the root of AS. helan to hide, to hele;
cf. also Lith. szalmas, Russ. shleme, Skr. [,c]arman
protection. [root]17. Cf. {Hele}, {Hell}, {Helm} a helmet.]
1. (Armor) A defensive covering for the head. See {Casque},
{Headpiece}, {Morion}, {Sallet}, and Illust. of {Beaver}.
[1913 Webster]
2. (Her.) The representation of a helmet over shields or coats of arms, denoting gradations of rank by modifications of form. [1913 Webster]
3. 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. [1913 Webster]
4. That which resembles a helmet in form, position, etc.; as: (a) (Chem.) The upper part of a retort. --Boyle. (b) (Bot.) The hood-formed upper sepal or petal of some flowers, as of the monkshood or the snapdragon. (c) (Zo["o]l.) A naked shield or protuberance on the top or fore part of the head of a bird. [1913 Webster]
{Helmet beetle} (Zo["o]l.), a leaf-eating beetle of the family {Chrysomelid[ae]}, having a short, broad, and flattened body. Many species are known.
{Helmet shell} (Zo["o]l.), one of many species of tropical marine univalve shells belonging to {Cassis} and allied genera. Many of them are large and handsome; several are used for cutting as cameos, and hence are called {cameo shells}. See {King conch}.
{Helmet shrike} (Zo["o]l.), an African wood shrike of the genus {Prionodon}, having a large crest. [1913 Webster]
The Collaborative International Dictionary of English. 2000.