dict.org

The DICT Development Group


Search for:
Search type:
Database:

Database copyright information
Server information
Wiki: Resources, links, and other information


1 definition found
 for Helmet shell
From The Collaborative International Dictionary of English v.0.48 :

  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) (Zool.) A naked shield or protuberance on the top or
            fore part of the head of a bird.
            [1913 Webster]
  
     Helmet beetle (Zool.), a leaf-eating beetle of the family
        Chrysomelid[ae], having a short, broad, and flattened
        body. Many species are known.
  
     Helmet shell (Zool.), 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 (Zool.), an African wood shrike of the genus
        Prionodon, having a large crest.
        [1913 Webster]

Questions or comments about this site? Contact webmaster@dict.org