| airs | (noun) affected manners intended to impress others | Synonyms: pose |
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| airscrew | (noun) a propeller that rotates to push against air | Synonyms: airplane propeller, prop |
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| airship | (noun) a steerable self-propelled aircraft | Synonyms: dirigible |
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| airsickness | (noun) motion sickness experienced while traveling by air (especially during turbulence) | Synonyms: air sickness |
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| airspace | (noun) the atmosphere above a nation that is deemed to be under its jurisdiction | - |
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| (noun) the space in the atmosphere immediately above the earth | Synonyms: air space |
| airspeed | (noun) the speed of an aircraft relative to the air in which it is flying | - |
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| airstream | (noun) a relatively well-defined prevailing wind | - |
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| (noun) the flow of air that is driven backwards by an aircraft propeller | Synonyms: backwash, race, slipstream, wash |
| airstrip | (noun) an airfield without normal airport facilities | Synonyms: flight strip, landing strip, strip |
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