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back |
the backbone; spine. [1/10 definitions] |
invertebrate |
without a backbone [2 definitions] |
shellfish |
a small animal that lives in fresh or salt water and has a shell outside its body. Shellfish are not true fish. They are invertebrates, or animals with no backbone. People can eat many kinds of shellfish, including clams, oysters, shrimp, and lobsters. |
spinal column |
the row of bones that runs along the center of the back; spine; backbone. The bones of the spinal column are called vertebrae. The spinal column protects the nerves in the spinal cord. |
spine |
the backbone; spinal column. [1/3 definitions] |
tail |
the rear part of an animal's body that sticks out from the backbone. [1/7 definitions] |
vertebrate |
having a backbone. [2 definitions] |
worm |
an animal with a long, thin, round or flat body. Worms have no legs and move by creeping or crawling. Worms are invertebrates and have no backbone. [1/7 definitions] |
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