D defs.my
Entry 3 senses Webster, 1913

Glider

/glī'də/ · Glid·er · IPA /ˈɡlaɪdɚ/
01 n. One who, or that which, glides.
  1. 1.
    One who, or that which, glides.
  2. 2.
    a heavier-than-air flying machine similar to an airplane, but without an engine. It is typically towed to a high altitide by a powered aircraft and then glides to earth with no other source of power.
  3. 3.
    a type of seat used on porches or in gardens, which is mounted on a frame so that it may glide forward and backward.