air cushion, n.
a cushion usually made of rubber or plastic that can be inflated
<noun.artifact>
air cushion inflatable cushion
semantic pointers
hypernym
a mechanical device using confined air to absorb the shock of motion
<noun.artifact>
air cushion air spring
semantic pointers
hypernym
the trapped air that supports a hovercraft a short distance above the water or ground
<noun.substance>
air cushion
semantic pointers
hypernym