Definition of shell

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Shell (n.) The outer frame or case of a block within which the sheaves revolve.

Lern More About Shell

Veneracea :: Veneracea (n. pl.) An extensive tribe of bivalve mollusks of which the genus Venus is the type. The shells are usually oval, or somewhat heartshaped, with a conspicuous lunule. See Venus..
Shell :: Shell (v. i.) To be disengaged from the ear or husk; as, wheat or rye shells in reaping..
Wedge-shell :: Wedge-shell (n.) Any one of numerous species of small marine bivalves belonging to Donax and allied genera in which the shell is wedge-shaped.
Faluns :: Faluns (n.) A series of strata, of the Middle Tertiary period, of France, abounding in shells, and used by Lyell as the type of his Miocene subdivision..
Petworth Marble :: Petworth marble () A kind of shell marble occurring in the Wealden clay at Petworth, in Sussex, England; -- called also Sussex marble..
Shell :: Shell (v. t.) To throw shells or bombs upon or into; to bombard; as, to shell a town..
Scutibranchiate :: Scutibranchiate (a.) Having the gills protected by a shieldlike shell; of or pertaining to the Scutibranchiata.
Vitrina :: Vitrina (n.) A genus of terrestrial gastropods, having transparent, very thin, and delicate shells, -- whence the name..
Celluloid :: Celluloid (n.) A substance composed essentially of gun cotton and camphor, and when pure resembling ivory in texture and color, but variously colored to imitate coral, tortoise shell, amber, malachite, etc. It is used in the manufacture of jewelry and many small articles, as combs, brushes, collars, and cuffs; -- originally called xylonite..
Chank :: Chank (n.) The East Indian name for the large spiral shell of several species of sea conch much used in making bangles, esp. Turbinella pyrum. Called also chank chell..
Natica :: Natica (n.) Any one of numerous species of marine gastropods belonging to Natica, Lunatia, Neverita, and other allied genera (family Naticidae.) They burrow beneath the sand, or mud, and drill other shells..
Gladius :: Gladius (n.) The internal shell, or pen, of cephalopods like the squids..
Trachelipoda :: Trachelipoda (n.pl.) An extensive artificial group of gastropods comprising all those which have a spiral shell and the foot attached to the base of the neck.
Perforata :: Perforata (n. pl.) A division of Foraminifera, including those having perforated shells..
Oliva :: Oliva (n.) A genus of polished marine gastropod shells, chiefly tropical, and often beautifully colored..
Shed :: Shed (v. t.) To let fall; to throw off, as a natural covering of hair, feathers, shell; to cast; as, fowls shed their feathers; serpents shed their skins; trees shed leaves..
Beak :: Beak (n.) The upper or projecting part of the shell, near the hinge of a bivalve..
Maclurea :: Maclurea (n.) A genus of spiral gastropod shells, often of large size, characteristic of the lower Silurian rocks..
Articulata :: Articulata (v.) One of the subdivisions of the Brachiopoda, including those that have the shells united by a hinge..
Polythalamia :: Polythalamia (n. pl.) A division of Foraminifera including those having a manychambered shell.
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