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seat cushion (EN)
phrase

phrase “seat cushion”

  1. a cushion placed on a seat to provide additional comfort or support
    She placed a soft seat cushion on the wooden chair to make it more comfortable during dinner.
  2. (in automotive) the part of a vehicle's seat that supports the occupant's weight
    The seat cushion in his car was adjustable for better ergonomics during long drives.
  3. (in aviation) a removable cushion on an airplane seat that can be used as a flotation device in an emergency
    The safety briefing explained how to use the seat cushion as a flotation aid if the plane lands on water.