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mattress

noun

    1. a casing of strong fabric filled with cotton, hair, foam rubber, etc., usually containing coiled springs, often quilted or tufted at intervals, and used on or as a bed
    2. an inflatable pad used in the same way
      in full air mattress
  1. a mass or mat of interwoven brushwood, poles, etc. used to protect an embankment or dike from erosion, etc.

See mattress in American Heritage Dictionary 4

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