air cushion

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. the trapped air that supports a hovercraft a short distance above the water or ground
• Hypernyms:
compressed air
2. a mechanical device using confined air to absorb the shock of motion
• Syn:
air spring
• Hypernyms:
shock absorber, shock, cushion
3. a cushion usually made of rubber or plastic that can be inflated
• Syn:
inflatable cushion
• Hypernyms:
cushion