1. a large sheet of paper that is folded to fit inside a book or magazine and can be unfolded to show a map, diagram, or picture

1. designed to fold out or unfold

Examples

• The atlas included a colorful foldout map of the world.
• She carefully unfolded the foldout diagram showing the airplane’s parts.
• The magazine featured a stunning foldout poster of the city skyline.
• The instruction manual had a foldout chart with all the measurements.
• The foldout table was perfect for the small apartment.
• He opened the foldout bed for his overnight guest.
• The travel guide contained a detailed foldout street map.