cushion cushion /ˈkʊʃən/

noun

1. () A mechanical damper; absorbs energy of sudden impulses  ( shock , cushion , shock absorber )
   a mechanical damper; absorbs energy of sudden impulses
    The old car needed a new set of shocks
   the old car needed a new set of shocks
   
   
2. A soft bag filled with air or a mass of padding such as feathers or foam rubber etc.  ( cushion )
   a soft bag filled with air or a mass of padding such as feathers or foam rubber etc.
    The cushions on the sofa were so comfortable I almost fell asleep
   The cushions on the sofa were so comfortable I almost fell asleep
   
   
3. The layer of air that supports a hovercraft or similar vehicle  ( cushion )
   the layer of air that supports a hovercraft or similar vehicle
   

verb

1. () Protect from impact  ( buffer , soften , cushion )
   protect from impact
    Cushion the blow
   cushion the blow