| abalone |
a large sea snail that has several shiny colors on the inside of its shell. Abalone are mollusks. People eat abalone meat and make decorations from the shells. |
| barnacle |
a small sea animal that attaches its shell to rocks, the bottom of ships, docks, and other objects in shallow parts of the ocean. Barnacles float freely in the ocean when they are young. They develop shells with sharp edges as adults. Barnacles are kinds of crustaceans. |
| bomb |
a metal shell filled with explosives. A bomb destroys a target by being thrown at or dropped on it. [1/4 definitions] |
| chamber |
the compartment of a gun that holds the shell or cartridge. [1/5 definitions] |
| chestnut |
a nut that grows inside a prickly shell. It has a sweet taste. [1/4 definitions] |
| clam |
an animal with a soft body and a hard shell made of two hinged pieces that open and close. Many kinds of clams live in the ocean and in fresh water. People eat some kinds of clams. Clams are mollusks. [1/2 definitions] |
| cockle |
a small animal with a soft body and a hard shell shaped like a heart. Cockles are mollusks with two hinged shells that open and close. They are kinds of clams. People sometimes eat cockles. |
| conch |
a sea animal with a soft body and a large, spiral shell. Conches are carnivorous mollusks that eat smaller mollusks such as clams. Several kinds of conches live in warm parts of the ocean all around the world. Conches are closely related to snails. [2 definitions] |
| crab1 |
an animal with a wide, flat body covered by a hard shell. Crabs have ten legs, including a pair of claws, eyes on short stalks, and antennae. Most kinds of crabs live in the ocean and eat many kinds of food. Crabs are crustaceans, which are a kind of arthropod. The biggest crabs are larger than any other arthropod. [1/2 definitions] |
| crayfish |
a small animal with a hard, jointed shell that lives in fresh water. Crayfish are crustaceans and are closely related to lobsters. |
| crustacean |
an animal with a hard, jointed shell. Crustaceans live in fresh or salt water. There are many kinds of crustaceans, including crabs, crayfish, lobsters, and shrimps. Crustaceans are kinds of arthropods. |
| hard-boiled |
an egg that is boiled in the shell until firm all the way through. [1/2 definitions] |
| hull1 |
the outer shell or covering of fruits, nuts, and seeds. [1/3 definitions] |
| hull2 |
the rigid frame and outer shell of a ship. |
| lobster |
an animal with a hard, jointed shell that lives in the ocean. Lobsters have four pairs of legs and a pair of large claws. They are a kind of crustacean. [1/2 definitions] |
| meat |
the inner part, which can be eaten, in contrast to the shell or skin. [1/3 definitions] |
| mollusk |
a member of a group of invertebrate animals that live in water. Most kinds of mollusks live in the ocean and have soft bodies covered by a shell. Snails, clams, squid, and octopuses are examples of mollusks. |
| mussel |
an animal with a soft body and a hard shell made of two hinged pieces that open and close. Many kinds of mussels live in the ocean and in fresh water. Mussels are mollusks and are closely related to clams and oysters. People eat some kinds of mussels. |
| nut |
a dry seed or fruit made up of a kernel contained in a hard, tough shell. The kernel of a nut is often used as food. The kernal is often called the "meat" of the nut. [2/4 definitions] |
| nutcracker |
a tool for cracking the shell of a nut. |
| oyster |
a small animal with a soft body and a hard shell in two pieces. Oysters have a rough shell with a very shiny inside, where pearls sometimes grow. Oysters live in shallow ocean water. They are mollusks and are closely related to clams and mussels. People eat some kinds of oysters. |