Helmet shell

Helmet shell
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.

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  • helmet shell — noun 1. : a gastropod mollusk of the family Cassididae 2. : the thick walled shell of the helmet shell often used for cameos * * * 1. a predatory marine gastropod of the family Cassidae, characterized by a thick, heavy shell with a broadened… …   Useful english dictionary

  • helmet shell — 1. a predatory marine gastropod of the family Cassidae, characterized by a thick, heavy shell with a broadened outer lip. 2. the shell of this animal, often used for making cameos. [1745 55] * * * ▪ gastropod family  any marine snail of the… …   Universalium

  • helmet-shell — helˈmet shell noun A gastropod of the genus Cassis, having a thick heavy shell with bold ridges • • • Main Entry: ↑helmet …   Useful english dictionary

  • helmet shell — hel′met shell n. 1) ivt a predatory marine gastropod of the family Cassidae, characterized by a thick heavy shell with a broadened outer lip 2) ivt the shell of this animal, used for making cameos • Etymology: 1745–55 …   From formal English to slang

  • helmet shell —   Pū, olē …   English-Hawaiian dictionary

  • 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… …   The Collaborative International Dictionary of English

  • Helmet beetle — 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.… …   The Collaborative International Dictionary of English

  • Helmet shrike — 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.… …   The Collaborative International Dictionary of English

  • shell —   1. Marine shell. Pūpū (see Haw. Eng. entry and entries that follow it), iwi.   Also: ākōlea (pipipi ākōlea, kōlea), ālealea, aoa (maka aoa), apuhihi, āunauna, hailimoa, hau, hīhīwai (hapawai), hūai, kahelelani, kauna oa (kio, una oa), koholua,… …   English-Hawaiian dictionary

  • helmet — noun 1》 a hard or padded protective hat. 2》 Botany the arched upper part (galea) of the corolla in some flowers. 3》 (also helmet shell) a predatory mollusc with a squat heavy shell, living in tropical and temperate seas. [Family Cassidae.]… …   English new terms dictionary

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