sailplane

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sailplane:

see gliderglider,
type of aircraft resembling an airplane but having at most a small auxiliary propulsion plant and usually no means of propulsion at all. The typical modern glider has very slender wings and a streamlined body.
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sailplane

sailplane
A high-performance glider meant for soaring. With their high aspect ratio wings and light weight, sailplanes can stay aloft for a considerable period.