skeleton

From WikiWord, the free dictionary

/ˈskɛlətən/ English

Definitions

The system that provides support to an organism, internal and made up of bones and cartilage in vertebrates, external in some other animals.
An anthropomorphic representation of a skeleton.“She dressed up as a skeleton for Halloween.”
A very thin person.“She lost so much weight while she was ill that she became a skeleton.”
The central core of something that gives shape to the entire structure.“The skeleton of the organisation is essentially the same as it was ten years ago, but many new faces have come and gone.”

A type of tobogganing in which competitors lie face down, and descend head first.