Definitions for sailplaneˈseɪlˌpleɪn
Random House Webster's College Dictionary
sail•planeˈseɪlˌpleɪn(n.; v.)-planed, -plan•ing.
(n.)a very light glider that can be lifted by an upward current of air.
(v.i.)to soar in a sailplane.
Origin of sailplane:
aircraft supported only by the dynamic action of air against its surfaces
fly a plane without an engine
A glider that is optimised for soaring and is equipped with fixed wings and fuselage.
Origin: sail + plane