mattress mattress /ˈmætrəs/

noun

1. A large thick pad filled with resilient material and often incorporating coiled springs, used as a bed or part of a bed  ( mattress )
   a large thick pad filled with resilient material and often incorporating coiled springs, used as a bed or part of a bed
    A good mattress is essential for a good night's sleep
   A good mattress is essential for a good night's sleep