the.com/box spring
A wooden crate pretending to be essential, billed hourly at mattress-store markup.
means A heavy wood-and-metal frame topped with springs or slats that sits under a mattress, raising it off the floor and absorbing some of the shock of use.
from Straightforward and literal: a 'box' (a wooden frame structure) built around 'springs' (coiled wire), dating to when mattress support systems actually contained coil springs inside a boxed frame — a mid-19th to early-20th-century innovation in bedding. The name has outlasted the thing it described; most modern 'box springs' hold few or no springs at all, just slats or a solid platform, but the word stuck the way 'tin foil' stuck to aluminum.
- actual function
- mostly just raises mattress to a flattering height
- modern beds
- foundation or slats often work identically
- origin
- invented when mattresses needed spring support, not cushioning
- cost trick
- stores bundle it to inflate the total sale