Foldout (noun)

1. A page or section in a book or publication that can be folded out to reveal more information or content.
2. A type of furniture that can be folded up for storage or transportation.

Origin:

Derived from the verb 'fold out' meaning to unfold or open up.

Examples:

1. The foldout map was a helpful addition to the guidebook, showing a larger area in more detail.
2. The foldout sofa was perfect for small apartments, as it could be easily stored away when not in use.
3. The foldout section of the magazine featured a special article on the history of the city.
4. The foldout design of the book allowed for a large illustration to be included on a single page.
5. The foldout bed was a convenient sleeping solution for guests.