What is another word for box spring?
Pronunciation: [bˈɒks spɹˈɪŋ] (IPA) 
Box spring is a term that refers to a type of bed base with a wooden frame and metal springs inside. But there are many other terms that can be used to describe this essentially similar object. For instance, it can be called a spring box, a foundation, a mattress box, a bed box, a mattress foundation, or a support system. Other variations include the term bed base, bed frame, or box base. Essentially, whatever term is used to refer to the box spring, it serves the same purpose as a sturdy, supportive base for a mattress on a bed frame.
