The hard inner frame of a person or animal.
Skeletons are usually inside the body and are very important for holding the body up.
Examples:
The dog's skeleton is made of bones.
We learned about dinosaur skeletons in school.
The skeleton helps us stand up straight.
The spooky skeleton scared the children.
In the museum, there are big dinosaur skeletons.
The doctor studies the human skeleton to help people.