noun
a set of steps or stairs leading from an aircraft to the ground or another part of the aircraft
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The aircraft was equipped with an airstair for passengers to board and disembark.
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Make sure you watch your step when using the airstair to get off the plane.
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I tripped on the airstair and almost faceplanted on the tarmac.
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The airstair to success in this industry is networking and building strong relationships.