# What has a spine but no bones?

Source: https://silverapuzzles.com/riddles/what-has-a-spine-but-no-bones

An anatomy word applied to something on a shelf. The answer has a spine you can read, not one you can x-ray.

**Answer:** A book.

The edge of a book that faces out on a shelf is called its spine.

Hint: Check a shelf.

## How to think about it

1. A spine with no bones is a spine in name only, so look for objects with a part called that.
2. Think of the narrow edge you see when something stands on a shelf.
3. That edge is where the title is printed so you can find it.
4. A book has a spine and not a single bone.

## Why “a book” is the answer

The spine of a book is the bound edge that faces out on a shelf, where the title and author usually appear. It holds the pages together the way a backbone holds a body, which is how it got the name, but it contains paper and glue, not bone. The riddle lives on that borrowed word.

## Common wrong answers

- **A jellyfish.** A jellyfish has no bones and no spine either, so it fails the first half.
- **A cactus.** Cactus spines are sharp needles, and a cactus has many of them, not one.