Mattress /(?)/

Mat·tress

Mattress

n.
  1. A large pad stuffed with hair, moss, or other suitable soft material, and quilted or otherwise fastened, used as or in a bed, to support the human body while lying down.
  2. A mass of interwoven brush, poles, etc., to protect a bank from being worn away by currents or waves. (Hydraulic Engin.)

Phrases & Compounds
innerspring mattress
A variety of mattress{1} having springs inside to provide a flexible support; it is considered more comfortable than a stuffed mattress.