"trundle bed"的定义和意义

What is a "trundle bed"?

A trundle bed is a type of bed that includes a second bed hidden underneath the main bed, which can be pulled out when needed. The trundle bed is usually stored on wheels, allowing it to be easily slid in and out from under the main bed. This design is ideal for saving space and providing an extra sleeping area, making it a popular choice for guest rooms or children's rooms. Trundle beds are available in various sizes and styles, offering both practicality and convenience for accommodating additional guests or family members.