0 a bed that is filled with water --
1 a bed in which the mattress (= the part you lie on) is a container filled with water --
The bedroom was across from the living room, and featured a waterbed, the bathroom was accessed through the bedroom, and featured a bath, shower and also a toilet.
It is also recommended that the bed should be firm, and should not be a waterbed or couch; and that heavy quilts, comforters, and pillows should not be used.
A soft-sided waterbed consists of a water-containing mattress inside of a rectangular frame of sturdy foam, zippered inside a fabric casing, which sits on a platform.
Sanctorius also invented an early waterbed.
Early waterbed mattresses, and many inexpensive modern mattresses, have a single water chamber.
A hard-sided waterbed consists of a water-containing mattress inside a rectangular frame of wood resting on a plywood deck that sits on a platform.
It is impossible to push down the waterbed everywhere at once, because the volume of the water remains a constant.
During a lengthy hospitalization, he developed a design for a waterbed.
