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

Discoid :: Discoid (a.) Having the form of a disk, as those univalve shells which have the whorls in one plane, so as to form a disk, as the pearly nautilus..
Operculum :: Operculum (n.) The lid closing the aperture of various species of shells, as the common whelk. See Illust. of Gastropoda..
Conchitic :: Conchitic (a.) Composed of shells; containing many shells.
Maclurea :: Maclurea (n.) A genus of spiral gastropod shells, often of large size, characteristic of the lower Silurian rocks..
Dolium :: Dolium (n.) A genus of large univalve mollusks, including the partridge shell and tun shells..
Bivalve :: Bivalve (a.) Having two shells or valves which open and shut, as the oyster and certain seed vessels..
Soft-shell :: Soft-shell (a.) Alt. of Soft-shelle.
Multispiral :: Multispiral (a.) Having numerous spiral coils round a center or nucleus; -- said of the opercula of certain shells.
Univalved :: Univalved (a.) Having one valve; as, a univalve shell or pericarp..
Recapper :: Recapper (n.) A tool used for applying a fresh percussion cap or primer to a cartridge shell in reloading it.
Sutured :: Suture (n.) A seam, or impressed line, as between the segments of a crustacean, or between the whorls of a univalve shell..
Wampum :: Wampum (n.) Beads made of shells, used by the North American Indians as money, and also wrought into belts, etc., as an ornament..
Porcellaneous :: Porcellaneous (a.) Having a smooth, compact shell without pores; -- said of certain Foraminifera..
Candlebomb :: Candlebomb (n.) A pasteboard shell used in signaling. It is filled with a composition which makes a brilliant light when it explodes.
Brace :: Brace (n.) A piece of material used to transmit, or change the direction of, weight or pressure; any one of the pieces, in a frame or truss, which divide the structure into triangular parts. It may act as a tie, or as a strut, and serves to prevent distortion of the structure, and transverse strains in its members. A boiler brace is a diagonal stay, connecting the head with the shell..
Finfish :: Finfish (n.) True fish, as distinguished from shellfish..
Placophora :: Placophora (n. pl.) A division of gastropod Mollusca, including the chitons. The back is covered by eight shelly plates. Called also Polyplacophora. See Illust. under Chiton, and Isopleura..
Nutshell :: Nutshell (n.) The shell or hard external covering in which the kernel of a nut is inclosed.
Buckler :: Buckler (n.) The anterior segment of the shell of trilobites.
Ecdysis :: Ecdysis (n.) The act of shedding, or casting off, an outer cuticular layer, as in the case of serpents, lobsters, etc.; a coming out; as, the ecdysis of the pupa from its shell; exuviation..
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