Khechara literally means one moving in the air. In Hindu scriptures, Khechara are male spirits that flies or moves in the air. The female spirits that can move in air are known as Khechari.
Khechara could be an entity having human form with powers to fly like Devas, Gandharvas or Vidhyadhara.
The term is also used in relation to birds, clouds, sun, wind and aerial spirit.
Khechari Mudra is also a yoga technique.
Siddhas or Tantrics who had magical powers were also referred as Khechara.