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

Cuttlefish :: Cuttlefish (n.) A cephalopod of the genus Sepia, having an internal shell, large eyes, and ten arms furnished with denticulated suckers, by means of which it secures its prey. The name is sometimes applied to dibranchiate cephalopods generally..
Shell :: Shell (n.) A pod.
Purpura :: Purpura (n.) A genus of marine gastropods, usually having a rough and thick shell. Some species yield a purple dye..
Carapace :: Carapace (n.) The thick shell or shield which covers the back of the tortoise, or turtle, the crab, and other crustaceous animals..
Mail-shell :: Mail-shell (n.) A chiton.
Univalve :: Univalve (n.) A shell consisting of one valve only; a mollusk whose shell is composed of a single piece, as the snails and conchs..
Dreissena :: Dreissena (n.) A genus of bivalve shells of which one species (D. polymorpha) is often so abundant as to be very troublesome in the fresh waters of Europe.
Siphonobranchiata :: Siphonobranchiata (n. pl.) A tribe of gastropods having the mantle border, on one or both sides, prolonged in the form of a spout through which water enters the gill cavity. The shell itself is not always siphonostomatous in this group..
Fossil :: Fossil (a.) Like or pertaining to fossils; contained in rocks, whether petrified or not; as, fossil plants, shells..
Wentletrap :: Wentletrap (n.) Any one of numerous species of elegant, usually white, marine shells of the genus Scalaria, especially Scalaria pretiosa, which was formerly highly valued; -- called also staircase shell. See Scalaria..
Sheal :: Sheal (n.) A shell or pod.
Dolabriform :: Dolabriform (a.) Shaped like the head of an ax or hatchet, as some leaves, and also certain organs of some shellfish..
Apodeme :: Apodeme (n.) One of the processes of the shell which project inwards and unite with one another, in the thorax of many Crustacea..
Coronated :: Coronated (a.) Girt about the spire with a row of tubercles or spines; -- said of spiral shells.
Helicoid :: Helicoid (a.) Shaped like a snail shell; pertaining to the Helicidae, or Snail family..
Vesiculous :: Vesiculous (a.) Bladdery; vesicular; vesiculate; composed of vesicles; covered with vesicles; as, a vesiculose shell..
Trochoid :: Trochoid (a.) Top-shaped; having a flat base and conical spire; -- said of certain shells.
Marine :: Marine (a.) Of or pertaining to the sea; having to do with the ocean, or with navigation or naval affairs; nautical; as, marine productions or bodies; marine shells; a marine engine..
Pyrula :: Pyrula (n.) A genus of large marine gastropods. having a pear-shaped shell. It includes the fig-shells. See Illust. in Appendix.
Nutshell :: Nutshell (n.) Hence, a thing of little compass, or of little value..
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