Noun air cushion has 3 senses
  1. air cushion - the trapped air that supports a hovercraft a short distance above the water or ground
    --1 is a kind of
    compressed air
  2. air cushion, air spring - a mechanical device using confined air to absorb the shock of motion
    --2 is a kind of shock absorber, shock, cushion
  3. air cushion, inflatable cushion - a cushion usually made of rubber or plastic that can be inflated
    --3 is a kind of cushion
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