air cushion n.
1. Trapped air that supports a vehicle a short distance above the surface of land or water.
2. A device that uses trapped air to absorb the shock of motion, especially in vehicles. Also called air spring.
  airʹ-cush'ion (ârʹko͝osh'ən) or airʹ-cush'ioned (-ənd) adj.

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Universalium. 2010.

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