mattress

/M AE1 T R AH0 S/
noun
  1. 1

    A pad on which a person can recline and sleep, usually having an inner section of coiled springs covered with foam or other cushioning material then enclosed with cloth fabric.

  2. 2

    A form of retaining wall used to support foundations or an embankment

verb
  1. 1

    To cover with a thick layer, like a mattress; to blanket.

Source: https://en.wiktionary.org/wiki/mattress