Webster's English Dictionary

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airplane

air.plane \'a(*)r-.pla-n, 'e(*)r-\ n [alter. of aeroplane, prob. fr. LGk 
   aeroplanos wandering in air, fr]. Gk aer- + planos wandering, fr. 
   planasthai to wander - more at PLANET : a fixed-wing aircraft heavier than 
   air that is driven by a screw propell er or by a high-velocity jet and 
   supported by the dynamic reaction of the air against its wings